Home / 15,548.64-21,459.36-9,261.12

Finding the Fourth Proportional to 15,548.64, 21,459.36 and 9,261.12

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Solution

The fourth proportional to 15,548.64, 21,459.36 and 9,261.12 is: 12,781.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,548.64 : 21,459.36 = 9,261.12 : x
  2. Step 2: Convert to fraction form
    15,548.64/21,459.36 = 9,261.12/x
  3. Step 3: Cross multiply
    15,548.64x = 21,459.36 × 9,261.12
  4. Step 4: Simplify right side
    15,548.64x = 198,737,708.08
  5. Step 5: Solve for x
    x = 198,737,708.08/15,548.64
  6. Step 6: Final answer
    x = 12,781.68

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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.