Home / 28,502.48-42,752.76-12,909.20

Finding the Fourth Proportional to 28,502.48, 42,752.76 and 12,909.20

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Solution

The fourth proportional to 28,502.48, 42,752.76 and 12,909.20 is: 19,363.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.48 : 42,752.76 = 12,909.20 : x
  2. Step 2: Convert to fraction form
    28,502.48/42,752.76 = 12,909.20/x
  3. Step 3: Cross multiply
    28,502.48x = 42,752.76 × 12,909.20
  4. Step 4: Simplify right side
    28,502.48x = 551,903,929.39
  5. Step 5: Solve for x
    x = 551,903,929.39/28,502.48
  6. Step 6: Final answer
    x = 19,363.37

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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.