Home / 21,086.55-31,630.04-8,603.24

Finding the Fourth Proportional to 21,086.55, 31,630.04 and 8,603.24

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Solution

The fourth proportional to 21,086.55, 31,630.04 and 8,603.24 is: 12,904.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,086.55 : 31,630.04 = 8,603.24 : x
  2. Step 2: Convert to fraction form
    21,086.55/31,630.04 = 8,603.24/x
  3. Step 3: Cross multiply
    21,086.55x = 31,630.04 × 8,603.24
  4. Step 4: Simplify right side
    21,086.55x = 272,120,624.16
  5. Step 5: Solve for x
    x = 272,120,624.16/21,086.55
  6. Step 6: Final answer
    x = 12,904.94

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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.