Home / 21,543.11-29,725.08-12,588.87

Finding the Fourth Proportional to 21,543.11, 29,725.08 and 12,588.87

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Solution

The fourth proportional to 21,543.11, 29,725.08 and 12,588.87 is: 17,370.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,543.11 : 29,725.08 = 12,588.87 : x
  2. Step 2: Convert to fraction form
    21,543.11/29,725.08 = 12,588.87/x
  3. Step 3: Cross multiply
    21,543.11x = 29,725.08 × 12,588.87
  4. Step 4: Simplify right side
    21,543.11x = 374,205,064.92
  5. Step 5: Solve for x
    x = 374,205,064.92/21,543.11
  6. Step 6: Final answer
    x = 17,370.05

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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.