Home / 20,123.04-27,752.76-12,954.18

Finding the Fourth Proportional to 20,123.04, 27,752.76 and 12,954.18

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Solution

The fourth proportional to 20,123.04, 27,752.76 and 12,954.18 is: 17,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,123.04 : 27,752.76 = 12,954.18 : x
  2. Step 2: Convert to fraction form
    20,123.04/27,752.76 = 12,954.18/x
  3. Step 3: Cross multiply
    20,123.04x = 27,752.76 × 12,954.18
  4. Step 4: Simplify right side
    20,123.04x = 359,514,248.54
  5. Step 5: Solve for x
    x = 359,514,248.54/20,123.04
  6. Step 6: Final answer
    x = 17,865.80

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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.