Home / 21,032.80-31,548.56-8,549.12

Finding the Fourth Proportional to 21,032.80, 31,548.56 and 8,549.12

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Solution

The fourth proportional to 21,032.80, 31,548.56 and 8,549.12 is: 12,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.80 : 31,548.56 = 8,549.12 : x
  2. Step 2: Convert to fraction form
    21,032.80/31,548.56 = 8,549.12/x
  3. Step 3: Cross multiply
    21,032.80x = 31,548.56 × 8,549.12
  4. Step 4: Simplify right side
    21,032.80x = 269,712,425.27
  5. Step 5: Solve for x
    x = 269,712,425.27/21,032.80
  6. Step 6: Final answer
    x = 12,823.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.