Home / 20,917.48-28,875.62-13,374.12

Finding the Fourth Proportional to 20,917.48, 28,875.62 and 13,374.12

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Solution

The fourth proportional to 20,917.48, 28,875.62 and 13,374.12 is: 18,462.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.48 : 28,875.62 = 13,374.12 : x
  2. Step 2: Convert to fraction form
    20,917.48/28,875.62 = 13,374.12/x
  3. Step 3: Cross multiply
    20,917.48x = 28,875.62 × 13,374.12
  4. Step 4: Simplify right side
    20,917.48x = 386,186,006.95
  5. Step 5: Solve for x
    x = 386,186,006.95/20,917.48
  6. Step 6: Final answer
    x = 18,462.36

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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.