Home / 28,433.30-42,686.90-21,864.09

Finding the Fourth Proportional to 28,433.30, 42,686.90 and 21,864.09

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Solution

The fourth proportional to 28,433.30, 42,686.90 and 21,864.09 is: 32,824.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.30 : 42,686.90 = 21,864.09 : x
  2. Step 2: Convert to fraction form
    28,433.30/42,686.90 = 21,864.09/x
  3. Step 3: Cross multiply
    28,433.30x = 42,686.90 × 21,864.09
  4. Step 4: Simplify right side
    28,433.30x = 933,310,114.10
  5. Step 5: Solve for x
    x = 933,310,114.10/28,433.30
  6. Step 6: Final answer
    x = 32,824.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.