Home / 28,403.28-42,605.28-15,921.36

Finding the Fourth Proportional to 28,403.28, 42,605.28 and 15,921.36

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Solution

The fourth proportional to 28,403.28, 42,605.28 and 15,921.36 is: 23,882.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,403.28 : 42,605.28 = 15,921.36 : x
  2. Step 2: Convert to fraction form
    28,403.28/42,605.28 = 15,921.36/x
  3. Step 3: Cross multiply
    28,403.28x = 42,605.28 × 15,921.36
  4. Step 4: Simplify right side
    28,403.28x = 678,334,000.78
  5. Step 5: Solve for x
    x = 678,334,000.78/28,403.28
  6. Step 6: Final answer
    x = 23,882.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.