Home / 28,870.24-43,305.12-9,150.40

Finding the Fourth Proportional to 28,870.24, 43,305.12 and 9,150.40

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Solution

The fourth proportional to 28,870.24, 43,305.12 and 9,150.40 is: 13,725.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870.24 : 43,305.12 = 9,150.40 : x
  2. Step 2: Convert to fraction form
    28,870.24/43,305.12 = 9,150.40/x
  3. Step 3: Cross multiply
    28,870.24x = 43,305.12 × 9,150.40
  4. Step 4: Simplify right side
    28,870.24x = 396,259,170.05
  5. Step 5: Solve for x
    x = 396,259,170.05/28,870.24
  6. Step 6: Final answer
    x = 13,725.52

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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.