Home / 12,543.60-18,814.19-7,611.92

Finding the Fourth Proportional to 12,543.60, 18,814.19 and 7,611.92

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Solution

The fourth proportional to 12,543.60, 18,814.19 and 7,611.92 is: 11,417.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,543.60 : 18,814.19 = 7,611.92 : x
  2. Step 2: Convert to fraction form
    12,543.60/18,814.19 = 7,611.92/x
  3. Step 3: Cross multiply
    12,543.60x = 18,814.19 × 7,611.92
  4. Step 4: Simplify right side
    12,543.60x = 143,211,977.01
  5. Step 5: Solve for x
    x = 143,211,977.01/12,543.60
  6. Step 6: Final answer
    x = 11,417.14

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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.