Home / 10,955.28-15,117.12-6,479.24

Finding the Fourth Proportional to 10,955.28, 15,117.12 and 6,479.24

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Solution

The fourth proportional to 10,955.28, 15,117.12 and 6,479.24 is: 8,940.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.28 : 15,117.12 = 6,479.24 : x
  2. Step 2: Convert to fraction form
    10,955.28/15,117.12 = 6,479.24/x
  3. Step 3: Cross multiply
    10,955.28x = 15,117.12 × 6,479.24
  4. Step 4: Simplify right side
    10,955.28x = 97,947,448.59
  5. Step 5: Solve for x
    x = 97,947,448.59/10,955.28
  6. Step 6: Final answer
    x = 8,940.66

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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.