Home / 28,878.71-43,319.64-9,155.84

Finding the Fourth Proportional to 28,878.71, 43,319.64 and 9,155.84

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Solution

The fourth proportional to 28,878.71, 43,319.64 and 9,155.84 is: 13,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.71 : 43,319.64 = 9,155.84 : x
  2. Step 2: Convert to fraction form
    28,878.71/43,319.64 = 9,155.84/x
  3. Step 3: Cross multiply
    28,878.71x = 43,319.64 × 9,155.84
  4. Step 4: Simplify right side
    28,878.71x = 396,627,430.32
  5. Step 5: Solve for x
    x = 396,627,430.32/28,878.71
  6. Step 6: Final answer
    x = 13,734.25

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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.