Home / 28,146.93-42,225.50-13,355.70

Finding the Fourth Proportional to 28,146.93, 42,225.50 and 13,355.70

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Solution

The fourth proportional to 28,146.93, 42,225.50 and 13,355.70 is: 20,035.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.93 : 42,225.50 = 13,355.70 : x
  2. Step 2: Convert to fraction form
    28,146.93/42,225.50 = 13,355.70/x
  3. Step 3: Cross multiply
    28,146.93x = 42,225.50 × 13,355.70
  4. Step 4: Simplify right side
    28,146.93x = 563,951,043.57
  5. Step 5: Solve for x
    x = 563,951,043.57/28,146.93
  6. Step 6: Final answer
    x = 20,035.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.