Home / 21,515.92-29,690.28-12,084.16

Finding the Fourth Proportional to 21,515.92, 29,690.28 and 12,084.16

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Solution

The fourth proportional to 21,515.92, 29,690.28 and 12,084.16 is: 16,675.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.92 : 29,690.28 = 12,084.16 : x
  2. Step 2: Convert to fraction form
    21,515.92/29,690.28 = 12,084.16/x
  3. Step 3: Cross multiply
    21,515.92x = 29,690.28 × 12,084.16
  4. Step 4: Simplify right side
    21,515.92x = 358,782,093.96
  5. Step 5: Solve for x
    x = 358,782,093.96/21,515.92
  6. Step 6: Final answer
    x = 16,675.19

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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.