Home / 10,979.88-15,159.30-9,798.92

Finding the Fourth Proportional to 10,979.88, 15,159.30 and 9,798.92

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Solution

The fourth proportional to 10,979.88, 15,159.30 and 9,798.92 is: 13,528.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,979.88 : 15,159.30 = 9,798.92 : x
  2. Step 2: Convert to fraction form
    10,979.88/15,159.30 = 9,798.92/x
  3. Step 3: Cross multiply
    10,979.88x = 15,159.30 × 9,798.92
  4. Step 4: Simplify right side
    10,979.88x = 148,544,767.96
  5. Step 5: Solve for x
    x = 148,544,767.96/10,979.88
  6. Step 6: Final answer
    x = 13,528.82

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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.