Home / 20,528.57-30,805.02-8,681.72

Finding the Fourth Proportional to 20,528.57, 30,805.02 and 8,681.72

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Solution

The fourth proportional to 20,528.57, 30,805.02 and 8,681.72 is: 13,027.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.57 : 30,805.02 = 8,681.72 : x
  2. Step 2: Convert to fraction form
    20,528.57/30,805.02 = 8,681.72/x
  3. Step 3: Cross multiply
    20,528.57x = 30,805.02 × 8,681.72
  4. Step 4: Simplify right side
    20,528.57x = 267,440,404.21
  5. Step 5: Solve for x
    x = 267,440,404.21/20,528.57
  6. Step 6: Final answer
    x = 13,027.72

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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.