Home / 21,615.52-32,331.12-13,275.04

Finding the Fourth Proportional to 21,615.52, 32,331.12 and 13,275.04

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Solution

The fourth proportional to 21,615.52, 32,331.12 and 13,275.04 is: 19,855.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.52 : 32,331.12 = 13,275.04 : x
  2. Step 2: Convert to fraction form
    21,615.52/32,331.12 = 13,275.04/x
  3. Step 3: Cross multiply
    21,615.52x = 32,331.12 × 13,275.04
  4. Step 4: Simplify right side
    21,615.52x = 429,196,911.24
  5. Step 5: Solve for x
    x = 429,196,911.24/21,615.52
  6. Step 6: Final answer
    x = 19,855.96

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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.