Home / 10,959.36-15,121.68-6,242.40

Finding the Fourth Proportional to 10,959.36, 15,121.68 and 6,242.40

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Solution

The fourth proportional to 10,959.36, 15,121.68 and 6,242.40 is: 8,613.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959.36 : 15,121.68 = 6,242.40 : x
  2. Step 2: Convert to fraction form
    10,959.36/15,121.68 = 6,242.40/x
  3. Step 3: Cross multiply
    10,959.36x = 15,121.68 × 6,242.40
  4. Step 4: Simplify right side
    10,959.36x = 94,395,575.23
  5. Step 5: Solve for x
    x = 94,395,575.23/10,959.36
  6. Step 6: Final answer
    x = 8,613.24

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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.