Home / 10,402.48-14,355.12-5,686.66

Finding the Fourth Proportional to 10,402.48, 14,355.12 and 5,686.66

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Solution

The fourth proportional to 10,402.48, 14,355.12 and 5,686.66 is: 7,847.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,402.48 : 14,355.12 = 5,686.66 : x
  2. Step 2: Convert to fraction form
    10,402.48/14,355.12 = 5,686.66/x
  3. Step 3: Cross multiply
    10,402.48x = 14,355.12 × 5,686.66
  4. Step 4: Simplify right side
    10,402.48x = 81,632,686.70
  5. Step 5: Solve for x
    x = 81,632,686.70/10,402.48
  6. Step 6: Final answer
    x = 7,847.43

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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.