Home / 28,878.07-43,318.28-9,156.19

Finding the Fourth Proportional to 28,878.07, 43,318.28 and 9,156.19

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Solution

The fourth proportional to 28,878.07, 43,318.28 and 9,156.19 is: 13,734.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.07 : 43,318.28 = 9,156.19 : x
  2. Step 2: Convert to fraction form
    28,878.07/43,318.28 = 9,156.19/x
  3. Step 3: Cross multiply
    28,878.07x = 43,318.28 × 9,156.19
  4. Step 4: Simplify right side
    28,878.07x = 396,630,402.15
  5. Step 5: Solve for x
    x = 396,630,402.15/28,878.07
  6. Step 6: Final answer
    x = 13,734.66

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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.