Home / 21,098.16-31,635.25-8,603.55

Finding the Fourth Proportional to 21,098.16, 31,635.25 and 8,603.55

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Solution

The fourth proportional to 21,098.16, 31,635.25 and 8,603.55 is: 12,900.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,098.16 : 31,635.25 = 8,603.55 : x
  2. Step 2: Convert to fraction form
    21,098.16/31,635.25 = 8,603.55/x
  3. Step 3: Cross multiply
    21,098.16x = 31,635.25 × 8,603.55
  4. Step 4: Simplify right side
    21,098.16x = 272,175,433.63
  5. Step 5: Solve for x
    x = 272,175,433.63/21,098.16
  6. Step 6: Final answer
    x = 12,900.43

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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.