Home / 28,142.40-38,869.56-22,496.70

Finding the Fourth Proportional to 28,142.40, 38,869.56 and 22,496.70

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Solution

The fourth proportional to 28,142.40, 38,869.56 and 22,496.70 is: 31,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.40 : 38,869.56 = 22,496.70 : x
  2. Step 2: Convert to fraction form
    28,142.40/38,869.56 = 22,496.70/x
  3. Step 3: Cross multiply
    28,142.40x = 38,869.56 × 22,496.70
  4. Step 4: Simplify right side
    28,142.40x = 874,436,830.45
  5. Step 5: Solve for x
    x = 874,436,830.45/28,142.40
  6. Step 6: Final answer
    x = 31,071.86

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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.