Home / 20,124.03-27,781.16-12,574.55

Finding the Fourth Proportional to 20,124.03, 27,781.16 and 12,574.55

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Solution

The fourth proportional to 20,124.03, 27,781.16 and 12,574.55 is: 17,359.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.03 : 27,781.16 = 12,574.55 : x
  2. Step 2: Convert to fraction form
    20,124.03/27,781.16 = 12,574.55/x
  3. Step 3: Cross multiply
    20,124.03x = 27,781.16 × 12,574.55
  4. Step 4: Simplify right side
    20,124.03x = 349,335,383.70
  5. Step 5: Solve for x
    x = 349,335,383.70/20,124.03
  6. Step 6: Final answer
    x = 17,359.12

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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.