Home / 30,618.63-42,253.35-17,189.55

Finding the Fourth Proportional to 30,618.63, 42,253.35 and 17,189.55

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Solution

The fourth proportional to 30,618.63, 42,253.35 and 17,189.55 is: 23,721.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.63 : 42,253.35 = 17,189.55 : x
  2. Step 2: Convert to fraction form
    30,618.63/42,253.35 = 17,189.55/x
  3. Step 3: Cross multiply
    30,618.63x = 42,253.35 × 17,189.55
  4. Step 4: Simplify right side
    30,618.63x = 726,316,072.49
  5. Step 5: Solve for x
    x = 726,316,072.49/30,618.63
  6. Step 6: Final answer
    x = 23,721.38

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Half scale
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Double scale
Find fourth proportional to 30,619.63, 42,254.73 and 17,190.55
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.