Home / 15,249.60-21,042.72-9,281.52

Finding the Fourth Proportional to 15,249.60, 21,042.72 and 9,281.52

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Solution

The fourth proportional to 15,249.60, 21,042.72 and 9,281.52 is: 12,807.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,249.60 : 21,042.72 = 9,281.52 : x
  2. Step 2: Convert to fraction form
    15,249.60/21,042.72 = 9,281.52/x
  3. Step 3: Cross multiply
    15,249.60x = 21,042.72 × 9,281.52
  4. Step 4: Simplify right side
    15,249.60x = 195,308,426.53
  5. Step 5: Solve for x
    x = 195,308,426.53/15,249.60
  6. Step 6: Final answer
    x = 12,807.45

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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.