Home / 21,372.84-29,498.28-12,423.12

Finding the Fourth Proportional to 21,372.84, 29,498.28 and 12,423.12

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Solution

The fourth proportional to 21,372.84, 29,498.28 and 12,423.12 is: 17,146.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.84 : 29,498.28 = 12,423.12 : x
  2. Step 2: Convert to fraction form
    21,372.84/29,498.28 = 12,423.12/x
  3. Step 3: Cross multiply
    21,372.84x = 29,498.28 × 12,423.12
  4. Step 4: Simplify right side
    21,372.84x = 366,460,672.23
  5. Step 5: Solve for x
    x = 366,460,672.23/21,372.84
  6. Step 6: Final answer
    x = 17,146.09

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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.