Home / 10,242.78-14,139.39-6,887.54

Finding the Fourth Proportional to 10,242.78, 14,139.39 and 6,887.54

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Solution

The fourth proportional to 10,242.78, 14,139.39 and 6,887.54 is: 9,507.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,242.78 : 14,139.39 = 6,887.54 : x
  2. Step 2: Convert to fraction form
    10,242.78/14,139.39 = 6,887.54/x
  3. Step 3: Cross multiply
    10,242.78x = 14,139.39 × 6,887.54
  4. Step 4: Simplify right side
    10,242.78x = 97,385,543.50
  5. Step 5: Solve for x
    x = 97,385,543.50/10,242.78
  6. Step 6: Final answer
    x = 9,507.73

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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.