Home / 19,931.31-27,475.68-12,760.20

Finding the Fourth Proportional to 19,931.31, 27,475.68 and 12,760.20

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Solution

The fourth proportional to 19,931.31, 27,475.68 and 12,760.20 is: 17,590.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,931.31 : 27,475.68 = 12,760.20 : x
  2. Step 2: Convert to fraction form
    19,931.31/27,475.68 = 12,760.20/x
  3. Step 3: Cross multiply
    19,931.31x = 27,475.68 × 12,760.20
  4. Step 4: Simplify right side
    19,931.31x = 350,595,171.94
  5. Step 5: Solve for x
    x = 350,595,171.94/19,931.31
  6. Step 6: Final answer
    x = 17,590.17

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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.