Home / 21,875.24-30,178.36-13,377.73

Finding the Fourth Proportional to 21,875.24, 30,178.36 and 13,377.73

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Solution

The fourth proportional to 21,875.24, 30,178.36 and 13,377.73 is: 18,455.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,875.24 : 30,178.36 = 13,377.73 : x
  2. Step 2: Convert to fraction form
    21,875.24/30,178.36 = 13,377.73/x
  3. Step 3: Cross multiply
    21,875.24x = 30,178.36 × 13,377.73
  4. Step 4: Simplify right side
    21,875.24x = 403,717,951.92
  5. Step 5: Solve for x
    x = 403,717,951.92/21,875.24
  6. Step 6: Final answer
    x = 18,455.48

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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.