Home / 10,887.60-15,024.08-6,171.20

Finding the Fourth Proportional to 10,887.60, 15,024.08 and 6,171.20

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Solution

The fourth proportional to 10,887.60, 15,024.08 and 6,171.20 is: 8,515.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.60 : 15,024.08 = 6,171.20 : x
  2. Step 2: Convert to fraction form
    10,887.60/15,024.08 = 6,171.20/x
  3. Step 3: Cross multiply
    10,887.60x = 15,024.08 × 6,171.20
  4. Step 4: Simplify right side
    10,887.60x = 92,716,602.50
  5. Step 5: Solve for x
    x = 92,716,602.50/10,887.60
  6. Step 6: Final answer
    x = 8,515.80

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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.