Home / 28,123.64-38,810.69-15,377.64

Finding the Fourth Proportional to 28,123.64, 38,810.69 and 15,377.64

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Solution

The fourth proportional to 28,123.64, 38,810.69 and 15,377.64 is: 21,221.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.64 : 38,810.69 = 15,377.64 : x
  2. Step 2: Convert to fraction form
    28,123.64/38,810.69 = 15,377.64/x
  3. Step 3: Cross multiply
    28,123.64x = 38,810.69 × 15,377.64
  4. Step 4: Simplify right side
    28,123.64x = 596,816,818.97
  5. Step 5: Solve for x
    x = 596,816,818.97/28,123.64
  6. Step 6: Final answer
    x = 21,221.18

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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.