Home / 10,620.64-14,650.40-8,817.92

Finding the Fourth Proportional to 10,620.64, 14,650.40 and 8,817.92

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Solution

The fourth proportional to 10,620.64, 14,650.40 and 8,817.92 is: 12,163.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.64 : 14,650.40 = 8,817.92 : x
  2. Step 2: Convert to fraction form
    10,620.64/14,650.40 = 8,817.92/x
  3. Step 3: Cross multiply
    10,620.64x = 14,650.40 × 8,817.92
  4. Step 4: Simplify right side
    10,620.64x = 129,186,055.17
  5. Step 5: Solve for x
    x = 129,186,055.17/10,620.64
  6. Step 6: Final answer
    x = 12,163.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.