Home / 28,490.76-42,710.22-12,902.04

Finding the Fourth Proportional to 28,490.76, 42,710.22 and 12,902.04

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Solution

The fourth proportional to 28,490.76, 42,710.22 and 12,902.04 is: 19,341.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,490.76 : 42,710.22 = 12,902.04 : x
  2. Step 2: Convert to fraction form
    28,490.76/42,710.22 = 12,902.04/x
  3. Step 3: Cross multiply
    28,490.76x = 42,710.22 × 12,902.04
  4. Step 4: Simplify right side
    28,490.76x = 551,048,966.85
  5. Step 5: Solve for x
    x = 551,048,966.85/28,490.76
  6. Step 6: Final answer
    x = 19,341.32

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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.