Home / 10,979.28-15,118.92-10,749.24

Finding the Fourth Proportional to 10,979.28, 15,118.92 and 10,749.24

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Solution

The fourth proportional to 10,979.28, 15,118.92 and 10,749.24 is: 14,802.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.28 : 15,118.92 = 10,749.24 : x
  2. Step 2: Convert to fraction form
    10,979.28/15,118.92 = 10,749.24/x
  3. Step 3: Cross multiply
    10,979.28x = 15,118.92 × 10,749.24
  4. Step 4: Simplify right side
    10,979.28x = 162,516,899.62
  5. Step 5: Solve for x
    x = 162,516,899.62/10,979.28
  6. Step 6: Final answer
    x = 14,802.15

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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.