Home / 42,285.43-63,423.10-11,123.11

Finding the Fourth Proportional to 42,285.43, 63,423.10 and 11,123.11

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Solution

The fourth proportional to 42,285.43, 63,423.10 and 11,123.11 is: 16,683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,285.43 : 63,423.10 = 11,123.11 : x
  2. Step 2: Convert to fraction form
    42,285.43/63,423.10 = 11,123.11/x
  3. Step 3: Cross multiply
    42,285.43x = 63,423.10 × 11,123.11
  4. Step 4: Simplify right side
    42,285.43x = 705,462,117.84
  5. Step 5: Solve for x
    x = 705,462,117.84/42,285.43
  6. Step 6: Final answer
    x = 16,683.34

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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.