Home / 22,188.84-30,620.16-12,117.24

Finding the Fourth Proportional to 22,188.84, 30,620.16 and 12,117.24

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Solution

The fourth proportional to 22,188.84, 30,620.16 and 12,117.24 is: 16,721.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.84 : 30,620.16 = 12,117.24 : x
  2. Step 2: Convert to fraction form
    22,188.84/30,620.16 = 12,117.24/x
  3. Step 3: Cross multiply
    22,188.84x = 30,620.16 × 12,117.24
  4. Step 4: Simplify right side
    22,188.84x = 371,031,827.56
  5. Step 5: Solve for x
    x = 371,031,827.56/22,188.84
  6. Step 6: Final answer
    x = 16,721.55

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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.