Home / 10,280.30-14,186.80-5,564.57

Finding the Fourth Proportional to 10,280.30, 14,186.80 and 5,564.57

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Solution

The fourth proportional to 10,280.30, 14,186.80 and 5,564.57 is: 7,679.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.30 : 14,186.80 = 5,564.57 : x
  2. Step 2: Convert to fraction form
    10,280.30/14,186.80 = 5,564.57/x
  3. Step 3: Cross multiply
    10,280.30x = 14,186.80 × 5,564.57
  4. Step 4: Simplify right side
    10,280.30x = 78,943,441.68
  5. Step 5: Solve for x
    x = 78,943,441.68/10,280.30
  6. Step 6: Final answer
    x = 7,679.10

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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.