Home / 15,056.48-20,781.39-10,020.91

Finding the Fourth Proportional to 15,056.48, 20,781.39 and 10,020.91

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Solution

The fourth proportional to 15,056.48, 20,781.39 and 10,020.91 is: 13,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,056.48 : 20,781.39 = 10,020.91 : x
  2. Step 2: Convert to fraction form
    15,056.48/20,781.39 = 10,020.91/x
  3. Step 3: Cross multiply
    15,056.48x = 20,781.39 × 10,020.91
  4. Step 4: Simplify right side
    15,056.48x = 208,248,438.86
  5. Step 5: Solve for x
    x = 208,248,438.86/15,056.48
  6. Step 6: Final answer
    x = 13,831.15

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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.