Home / 10,280.80-14,187.49-5,565.07

Finding the Fourth Proportional to 10,280.80, 14,187.49 and 5,565.07

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Solution

The fourth proportional to 10,280.80, 14,187.49 and 5,565.07 is: 7,679.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.80 : 14,187.49 = 5,565.07 : x
  2. Step 2: Convert to fraction form
    10,280.80/14,187.49 = 5,565.07/x
  3. Step 3: Cross multiply
    10,280.80x = 14,187.49 × 5,565.07
  4. Step 4: Simplify right side
    10,280.80x = 78,954,374.97
  5. Step 5: Solve for x
    x = 78,954,374.97/10,280.80
  6. Step 6: Final answer
    x = 7,679.79

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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.