Home / 15,225.96-21,011.94-8,938.44

Finding the Fourth Proportional to 15,225.96, 21,011.94 and 8,938.44

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Solution

The fourth proportional to 15,225.96, 21,011.94 and 8,938.44 is: 12,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,225.96 : 21,011.94 = 8,938.44 : x
  2. Step 2: Convert to fraction form
    15,225.96/21,011.94 = 8,938.44/x
  3. Step 3: Cross multiply
    15,225.96x = 21,011.94 × 8,938.44
  4. Step 4: Simplify right side
    15,225.96x = 187,813,964.97
  5. Step 5: Solve for x
    x = 187,813,964.97/15,225.96
  6. Step 6: Final answer
    x = 12,335.11

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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.