Home / 30,740.95-42,423.65-17,130.22

Finding the Fourth Proportional to 30,740.95, 42,423.65 and 17,130.22

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Solution

The fourth proportional to 30,740.95, 42,423.65 and 17,130.22 is: 23,640.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,740.95 : 42,423.65 = 17,130.22 : x
  2. Step 2: Convert to fraction form
    30,740.95/42,423.65 = 17,130.22/x
  3. Step 3: Cross multiply
    30,740.95x = 42,423.65 × 17,130.22
  4. Step 4: Simplify right side
    30,740.95x = 726,726,330.23
  5. Step 5: Solve for x
    x = 726,726,330.23/30,740.95
  6. Step 6: Final answer
    x = 23,640.33

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Find fourth proportional to 30,741.95, 42,425.03 and 17,131.22
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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.