Home / 28,391.29-42,592.10-11,742.28

Finding the Fourth Proportional to 28,391.29, 42,592.10 and 11,742.28

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Solution

The fourth proportional to 28,391.29, 42,592.10 and 11,742.28 is: 17,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,391.29 : 42,592.10 = 11,742.28 : x
  2. Step 2: Convert to fraction form
    28,391.29/42,592.10 = 11,742.28/x
  3. Step 3: Cross multiply
    28,391.29x = 42,592.10 × 11,742.28
  4. Step 4: Simplify right side
    28,391.29x = 500,128,305.28
  5. Step 5: Solve for x
    x = 500,128,305.28/28,391.29
  6. Step 6: Final answer
    x = 17,615.55

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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.