Home / 28,998.12-40,017.18-15,750.12

Finding the Fourth Proportional to 28,998.12, 40,017.18 and 15,750.12

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Solution

The fourth proportional to 28,998.12, 40,017.18 and 15,750.12 is: 21,735.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,998.12 : 40,017.18 = 15,750.12 : x
  2. Step 2: Convert to fraction form
    28,998.12/40,017.18 = 15,750.12/x
  3. Step 3: Cross multiply
    28,998.12x = 40,017.18 × 15,750.12
  4. Step 4: Simplify right side
    28,998.12x = 630,275,387.06
  5. Step 5: Solve for x
    x = 630,275,387.06/28,998.12
  6. Step 6: Final answer
    x = 21,735.04

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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.