Home / 30,689.28-42,350.79-17,260.53

Finding the Fourth Proportional to 30,689.28, 42,350.79 and 17,260.53

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Solution

The fourth proportional to 30,689.28, 42,350.79 and 17,260.53 is: 23,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,689.28 : 42,350.79 = 17,260.53 : x
  2. Step 2: Convert to fraction form
    30,689.28/42,350.79 = 17,260.53/x
  3. Step 3: Cross multiply
    30,689.28x = 42,350.79 × 17,260.53
  4. Step 4: Simplify right side
    30,689.28x = 730,996,883.23
  5. Step 5: Solve for x
    x = 730,996,883.23/30,689.28
  6. Step 6: Final answer
    x = 23,819.29

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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.