Home / 28,271.33-39,019.46-21,137.04

Finding the Fourth Proportional to 28,271.33, 39,019.46 and 21,137.04

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Solution

The fourth proportional to 28,271.33, 39,019.46 and 21,137.04 is: 29,172.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.33 : 39,019.46 = 21,137.04 : x
  2. Step 2: Convert to fraction form
    28,271.33/39,019.46 = 21,137.04/x
  3. Step 3: Cross multiply
    28,271.33x = 39,019.46 × 21,137.04
  4. Step 4: Simplify right side
    28,271.33x = 824,755,781.11
  5. Step 5: Solve for x
    x = 824,755,781.11/28,271.33
  6. Step 6: Final answer
    x = 29,172.87

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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.