Home / 15,529.39-21,432.53-11,561.81

Finding the Fourth Proportional to 15,529.39, 21,432.53 and 11,561.81

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Solution

The fourth proportional to 15,529.39, 21,432.53 and 11,561.81 is: 15,956.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,529.39 : 21,432.53 = 11,561.81 : x
  2. Step 2: Convert to fraction form
    15,529.39/21,432.53 = 11,561.81/x
  3. Step 3: Cross multiply
    15,529.39x = 21,432.53 × 11,561.81
  4. Step 4: Simplify right side
    15,529.39x = 247,798,761.42
  5. Step 5: Solve for x
    x = 247,798,761.42/15,529.39
  6. Step 6: Final answer
    x = 15,956.76

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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.