Home / 10,280.80-14,187.48-5,565.08

Finding the Fourth Proportional to 10,280.80, 14,187.48 and 5,565.08

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Solution

The fourth proportional to 10,280.80, 14,187.48 and 5,565.08 is: 7,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.80 : 14,187.48 = 5,565.08 : x
  2. Step 2: Convert to fraction form
    10,280.80/14,187.48 = 5,565.08/x
  3. Step 3: Cross multiply
    10,280.80x = 14,187.48 × 5,565.08
  4. Step 4: Simplify right side
    10,280.80x = 78,954,461.20
  5. Step 5: Solve for x
    x = 78,954,461.20/10,280.80
  6. Step 6: Final answer
    x = 7,679.80

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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.