Home / 30,718.11-42,392.34-17,290.23

Finding the Fourth Proportional to 30,718.11, 42,392.34 and 17,290.23

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Solution

The fourth proportional to 30,718.11, 42,392.34 and 17,290.23 is: 23,861.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718.11 : 42,392.34 = 17,290.23 : x
  2. Step 2: Convert to fraction form
    30,718.11/42,392.34 = 17,290.23/x
  3. Step 3: Cross multiply
    30,718.11x = 42,392.34 × 17,290.23
  4. Step 4: Simplify right side
    30,718.11x = 732,973,308.84
  5. Step 5: Solve for x
    x = 732,973,308.84/30,718.11
  6. Step 6: Final answer
    x = 23,861.28

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Half scale
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Double scale
Find fourth proportional to 30,719.11, 42,393.72 and 17,291.23
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.