Home / 28,856.64-43,290.30-9,140.16

Finding the Fourth Proportional to 28,856.64, 43,290.30 and 9,140.16

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Solution

The fourth proportional to 28,856.64, 43,290.30 and 9,140.16 is: 13,711.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,856.64 : 43,290.30 = 9,140.16 : x
  2. Step 2: Convert to fraction form
    28,856.64/43,290.30 = 9,140.16/x
  3. Step 3: Cross multiply
    28,856.64x = 43,290.30 × 9,140.16
  4. Step 4: Simplify right side
    28,856.64x = 395,680,268.45
  5. Step 5: Solve for x
    x = 395,680,268.45/28,856.64
  6. Step 6: Final answer
    x = 13,711.93

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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.