Home / 15,781.99-21,769.96-10,114.72

Finding the Fourth Proportional to 15,781.99, 21,769.96 and 10,114.72

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Solution

The fourth proportional to 15,781.99, 21,769.96 and 10,114.72 is: 13,952.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.99 : 21,769.96 = 10,114.72 : x
  2. Step 2: Convert to fraction form
    15,781.99/21,769.96 = 10,114.72/x
  3. Step 3: Cross multiply
    15,781.99x = 21,769.96 × 10,114.72
  4. Step 4: Simplify right side
    15,781.99x = 220,197,049.81
  5. Step 5: Solve for x
    x = 220,197,049.81/15,781.99
  6. Step 6: Final answer
    x = 13,952.43

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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.