Home / 21,219.16-29,286-12,265.12

Finding the Fourth Proportional to 21,219.16, 29,286 and 12,265.12

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Solution

The fourth proportional to 21,219.16, 29,286 and 12,265.12 is: 16,927.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.16 : 29,286 = 12,265.12 : x
  2. Step 2: Convert to fraction form
    21,219.16/29,286 = 12,265.12/x
  3. Step 3: Cross multiply
    21,219.16x = 29,286 × 12,265.12
  4. Step 4: Simplify right side
    21,219.16x = 359,196,304.32
  5. Step 5: Solve for x
    x = 359,196,304.32/21,219.16
  6. Step 6: Final answer
    x = 16,927.92

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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.