Home / 21,339.12-32,009.16-16,959.60

Finding the Fourth Proportional to 21,339.12, 32,009.16 and 16,959.60

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Solution

The fourth proportional to 21,339.12, 32,009.16 and 16,959.60 is: 25,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.12 : 32,009.16 = 16,959.60 : x
  2. Step 2: Convert to fraction form
    21,339.12/32,009.16 = 16,959.60/x
  3. Step 3: Cross multiply
    21,339.12x = 32,009.16 × 16,959.60
  4. Step 4: Simplify right side
    21,339.12x = 542,862,549.94
  5. Step 5: Solve for x
    x = 542,862,549.94/21,339.12
  6. Step 6: Final answer
    x = 25,439.78

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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.