Home / 10,402.20-14,355.02-5,686.48

Finding the Fourth Proportional to 10,402.20, 14,355.02 and 5,686.48

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Solution

The fourth proportional to 10,402.20, 14,355.02 and 5,686.48 is: 7,847.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,402.20 : 14,355.02 = 5,686.48 : x
  2. Step 2: Convert to fraction form
    10,402.20/14,355.02 = 5,686.48/x
  3. Step 3: Cross multiply
    10,402.20x = 14,355.02 × 5,686.48
  4. Step 4: Simplify right side
    10,402.20x = 81,629,534.13
  5. Step 5: Solve for x
    x = 81,629,534.13/10,402.20
  6. Step 6: Final answer
    x = 7,847.33

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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.