Home / 21,528.80-32,293.20-13,234.40

Finding the Fourth Proportional to 21,528.80, 32,293.20 and 13,234.40

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Solution

The fourth proportional to 21,528.80, 32,293.20 and 13,234.40 is: 19,851.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.80 : 32,293.20 = 13,234.40 : x
  2. Step 2: Convert to fraction form
    21,528.80/32,293.20 = 13,234.40/x
  3. Step 3: Cross multiply
    21,528.80x = 32,293.20 × 13,234.40
  4. Step 4: Simplify right side
    21,528.80x = 427,381,126.08
  5. Step 5: Solve for x
    x = 427,381,126.08/21,528.80
  6. Step 6: Final answer
    x = 19,851.60

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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.