Home / 21,729.60-32,545.80-11,329.20

Finding the Fourth Proportional to 21,729.60, 32,545.80 and 11,329.20

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Solution

The fourth proportional to 21,729.60, 32,545.80 and 11,329.20 is: 16,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.60 : 32,545.80 = 11,329.20 : x
  2. Step 2: Convert to fraction form
    21,729.60/32,545.80 = 11,329.20/x
  3. Step 3: Cross multiply
    21,729.60x = 32,545.80 × 11,329.20
  4. Step 4: Simplify right side
    21,729.60x = 368,717,877.36
  5. Step 5: Solve for x
    x = 368,717,877.36/21,729.60
  6. Step 6: Final answer
    x = 16,968.46

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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.