Home / 12,520.32-17,277.48-7,215.90

Finding the Fourth Proportional to 12,520.32, 17,277.48 and 7,215.90

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Solution

The fourth proportional to 12,520.32, 17,277.48 and 7,215.90 is: 9,957.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.32 : 17,277.48 = 7,215.90 : x
  2. Step 2: Convert to fraction form
    12,520.32/17,277.48 = 7,215.90/x
  3. Step 3: Cross multiply
    12,520.32x = 17,277.48 × 7,215.90
  4. Step 4: Simplify right side
    12,520.32x = 124,672,567.93
  5. Step 5: Solve for x
    x = 124,672,567.93/12,520.32
  6. Step 6: Final answer
    x = 9,957.62

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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.