Home / 21,411.95-29,545.22-12,213.58

Finding the Fourth Proportional to 21,411.95, 29,545.22 and 12,213.58

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Solution

The fourth proportional to 21,411.95, 29,545.22 and 12,213.58 is: 16,852.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.95 : 29,545.22 = 12,213.58 : x
  2. Step 2: Convert to fraction form
    21,411.95/29,545.22 = 12,213.58/x
  3. Step 3: Cross multiply
    21,411.95x = 29,545.22 × 12,213.58
  4. Step 4: Simplify right side
    21,411.95x = 360,852,864.76
  5. Step 5: Solve for x
    x = 360,852,864.76/21,411.95
  6. Step 6: Final answer
    x = 16,852.88

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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.