Home / 14,083.60-21,125.40-8,543.20

Finding the Fourth Proportional to 14,083.60, 21,125.40 and 8,543.20

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Solution

The fourth proportional to 14,083.60, 21,125.40 and 8,543.20 is: 12,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,083.60 : 21,125.40 = 8,543.20 : x
  2. Step 2: Convert to fraction form
    14,083.60/21,125.40 = 8,543.20/x
  3. Step 3: Cross multiply
    14,083.60x = 21,125.40 × 8,543.20
  4. Step 4: Simplify right side
    14,083.60x = 180,478,517.28
  5. Step 5: Solve for x
    x = 180,478,517.28/14,083.60
  6. Step 6: Final answer
    x = 12,814.80

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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.