Home / 15,447.40-21,323.25-9,487.15

Finding the Fourth Proportional to 15,447.40, 21,323.25 and 9,487.15

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Solution

The fourth proportional to 15,447.40, 21,323.25 and 9,487.15 is: 13,095.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.40 : 21,323.25 = 9,487.15 : x
  2. Step 2: Convert to fraction form
    15,447.40/21,323.25 = 9,487.15/x
  3. Step 3: Cross multiply
    15,447.40x = 21,323.25 × 9,487.15
  4. Step 4: Simplify right side
    15,447.40x = 202,296,817.93
  5. Step 5: Solve for x
    x = 202,296,817.93/15,447.40
  6. Step 6: Final answer
    x = 13,095.85

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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.