Home / 19,931.64-27,505.06-10,979.12

Finding the Fourth Proportional to 19,931.64, 27,505.06 and 10,979.12

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Solution

The fourth proportional to 19,931.64, 27,505.06 and 10,979.12 is: 15,150.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.64 : 27,505.06 = 10,979.12 : x
  2. Step 2: Convert to fraction form
    19,931.64/27,505.06 = 10,979.12/x
  3. Step 3: Cross multiply
    19,931.64x = 27,505.06 × 10,979.12
  4. Step 4: Simplify right side
    19,931.64x = 301,981,354.35
  5. Step 5: Solve for x
    x = 301,981,354.35/19,931.64
  6. Step 6: Final answer
    x = 15,150.85

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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.