Home / 14,385.18-21,531.60-7,712.40

Finding the Fourth Proportional to 14,385.18, 21,531.60 and 7,712.40

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Solution

The fourth proportional to 14,385.18, 21,531.60 and 7,712.40 is: 11,543.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,385.18 : 21,531.60 = 7,712.40 : x
  2. Step 2: Convert to fraction form
    14,385.18/21,531.60 = 7,712.40/x
  3. Step 3: Cross multiply
    14,385.18x = 21,531.60 × 7,712.40
  4. Step 4: Simplify right side
    14,385.18x = 166,060,311.84
  5. Step 5: Solve for x
    x = 166,060,311.84/14,385.18
  6. Step 6: Final answer
    x = 11,543.85

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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.