Home / 15,781.61-21,769.44-10,114.35

Finding the Fourth Proportional to 15,781.61, 21,769.44 and 10,114.35

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Solution

The fourth proportional to 15,781.61, 21,769.44 and 10,114.35 is: 13,951.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.61 : 21,769.44 = 10,114.35 : x
  2. Step 2: Convert to fraction form
    15,781.61/21,769.44 = 10,114.35/x
  3. Step 3: Cross multiply
    15,781.61x = 21,769.44 × 10,114.35
  4. Step 4: Simplify right side
    15,781.61x = 220,183,672.79
  5. Step 5: Solve for x
    x = 220,183,672.79/15,781.61
  6. Step 6: Final answer
    x = 13,951.91

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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.