Home / 42,364.72-63,545.45-12,781.77

Finding the Fourth Proportional to 42,364.72, 63,545.45 and 12,781.77

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Solution

The fourth proportional to 42,364.72, 63,545.45 and 12,781.77 is: 19,172.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,364.72 : 63,545.45 = 12,781.77 : x
  2. Step 2: Convert to fraction form
    42,364.72/63,545.45 = 12,781.77/x
  3. Step 3: Cross multiply
    42,364.72x = 63,545.45 × 12,781.77
  4. Step 4: Simplify right side
    42,364.72x = 812,223,024.24
  5. Step 5: Solve for x
    x = 812,223,024.24/42,364.72
  6. Step 6: Final answer
    x = 19,172.16

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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.