Home / 21,924.65-30,254.78-12,972.98

Finding the Fourth Proportional to 21,924.65, 30,254.78 and 12,972.98

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Solution

The fourth proportional to 21,924.65, 30,254.78 and 12,972.98 is: 17,901.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,924.65 : 30,254.78 = 12,972.98 : x
  2. Step 2: Convert to fraction form
    21,924.65/30,254.78 = 12,972.98/x
  3. Step 3: Cross multiply
    21,924.65x = 30,254.78 × 12,972.98
  4. Step 4: Simplify right side
    21,924.65x = 392,494,763.91
  5. Step 5: Solve for x
    x = 392,494,763.91/21,924.65
  6. Step 6: Final answer
    x = 17,901.98

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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.