Home / 21,423.15-29,562.39-11,862.09

Finding the Fourth Proportional to 21,423.15, 29,562.39 and 11,862.09

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Solution

The fourth proportional to 21,423.15, 29,562.39 and 11,862.09 is: 16,368.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.15 : 29,562.39 = 11,862.09 : x
  2. Step 2: Convert to fraction form
    21,423.15/29,562.39 = 11,862.09/x
  3. Step 3: Cross multiply
    21,423.15x = 29,562.39 × 11,862.09
  4. Step 4: Simplify right side
    21,423.15x = 350,671,730.80
  5. Step 5: Solve for x
    x = 350,671,730.80/21,423.15
  6. Step 6: Final answer
    x = 16,368.82

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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.