Home / 29,306.18-40,442.47-15,877.76

Finding the Fourth Proportional to 29,306.18, 40,442.47 and 15,877.76

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Solution

The fourth proportional to 29,306.18, 40,442.47 and 15,877.76 is: 21,911.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,306.18 : 40,442.47 = 15,877.76 : x
  2. Step 2: Convert to fraction form
    29,306.18/40,442.47 = 15,877.76/x
  3. Step 3: Cross multiply
    29,306.18x = 40,442.47 × 15,877.76
  4. Step 4: Simplify right side
    29,306.18x = 642,135,893.88
  5. Step 5: Solve for x
    x = 642,135,893.88/29,306.18
  6. Step 6: Final answer
    x = 21,911.28

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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.