Home / 10,402.30-14,355.21-5,686.66

Finding the Fourth Proportional to 10,402.30, 14,355.21 and 5,686.66

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Solution

The fourth proportional to 10,402.30, 14,355.21 and 5,686.66 is: 7,847.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,402.30 : 14,355.21 = 5,686.66 : x
  2. Step 2: Convert to fraction form
    10,402.30/14,355.21 = 5,686.66/x
  3. Step 3: Cross multiply
    10,402.30x = 14,355.21 × 5,686.66
  4. Step 4: Simplify right side
    10,402.30x = 81,633,198.50
  5. Step 5: Solve for x
    x = 81,633,198.50/10,402.30
  6. Step 6: Final answer
    x = 7,847.61

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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.