Home / 15,752.04-21,737.87-8,678.45

Finding the Fourth Proportional to 15,752.04, 21,737.87 and 8,678.45

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Solution

The fourth proportional to 15,752.04, 21,737.87 and 8,678.45 is: 11,976.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,752.04 : 21,737.87 = 8,678.45 : x
  2. Step 2: Convert to fraction form
    15,752.04/21,737.87 = 8,678.45/x
  3. Step 3: Cross multiply
    15,752.04x = 21,737.87 × 8,678.45
  4. Step 4: Simplify right side
    15,752.04x = 188,650,909.21
  5. Step 5: Solve for x
    x = 188,650,909.21/15,752.04
  6. Step 6: Final answer
    x = 11,976.28

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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.