Home / 31,148.20-42,985.14-17,002.28

Finding the Fourth Proportional to 31,148.20, 42,985.14 and 17,002.28

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Solution

The fourth proportional to 31,148.20, 42,985.14 and 17,002.28 is: 23,463.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,148.20 : 42,985.14 = 17,002.28 : x
  2. Step 2: Convert to fraction form
    31,148.20/42,985.14 = 17,002.28/x
  3. Step 3: Cross multiply
    31,148.20x = 42,985.14 × 17,002.28
  4. Step 4: Simplify right side
    31,148.20x = 730,845,386.12
  5. Step 5: Solve for x
    x = 730,845,386.12/31,148.20
  6. Step 6: Final answer
    x = 23,463.49

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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.