Home / 30,718.40-42,388.08-17,287.52

Finding the Fourth Proportional to 30,718.40, 42,388.08 and 17,287.52

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Solution

The fourth proportional to 30,718.40, 42,388.08 and 17,287.52 is: 23,854.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718.40 : 42,388.08 = 17,287.52 : x
  2. Step 2: Convert to fraction form
    30,718.40/42,388.08 = 17,287.52/x
  3. Step 3: Cross multiply
    30,718.40x = 42,388.08 × 17,287.52
  4. Step 4: Simplify right side
    30,718.40x = 732,784,780.76
  5. Step 5: Solve for x
    x = 732,784,780.76/30,718.40
  6. Step 6: Final answer
    x = 23,854.91

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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.