Home / 20,306.78-27,995.80-14,248.79

Finding the Fourth Proportional to 20,306.78, 27,995.80 and 14,248.79

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Solution

The fourth proportional to 20,306.78, 27,995.80 and 14,248.79 is: 19,643.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,306.78 : 27,995.80 = 14,248.79 : x
  2. Step 2: Convert to fraction form
    20,306.78/27,995.80 = 14,248.79/x
  3. Step 3: Cross multiply
    20,306.78x = 27,995.80 × 14,248.79
  4. Step 4: Simplify right side
    20,306.78x = 398,906,239.46
  5. Step 5: Solve for x
    x = 398,906,239.46/20,306.78
  6. Step 6: Final answer
    x = 19,643.99

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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.