Home / 28,123.20-38,802.24-19,616.16

Finding the Fourth Proportional to 28,123.20, 38,802.24 and 19,616.16

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Solution

The fourth proportional to 28,123.20, 38,802.24 and 19,616.16 is: 27,064.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.20 : 38,802.24 = 19,616.16 : x
  2. Step 2: Convert to fraction form
    28,123.20/38,802.24 = 19,616.16/x
  3. Step 3: Cross multiply
    28,123.20x = 38,802.24 × 19,616.16
  4. Step 4: Simplify right side
    28,123.20x = 761,150,948.20
  5. Step 5: Solve for x
    x = 761,150,948.20/28,123.20
  6. Step 6: Final answer
    x = 27,064.88

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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.