Home / 21,218.92-29,278.85-12,264.69

Finding the Fourth Proportional to 21,218.92, 29,278.85 and 12,264.69

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Solution

The fourth proportional to 21,218.92, 29,278.85 and 12,264.69 is: 16,923.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,218.92 : 29,278.85 = 12,264.69 : x
  2. Step 2: Convert to fraction form
    21,218.92/29,278.85 = 12,264.69/x
  3. Step 3: Cross multiply
    21,218.92x = 29,278.85 × 12,264.69
  4. Step 4: Simplify right side
    21,218.92x = 359,096,018.81
  5. Step 5: Solve for x
    x = 359,096,018.81/21,218.92
  6. Step 6: Final answer
    x = 16,923.39

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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.