Home / 28,434.12-39,255.66-18,886.92

Finding the Fourth Proportional to 28,434.12, 39,255.66 and 18,886.92

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Solution

The fourth proportional to 28,434.12, 39,255.66 and 18,886.92 is: 26,074.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.12 : 39,255.66 = 18,886.92 : x
  2. Step 2: Convert to fraction form
    28,434.12/39,255.66 = 18,886.92/x
  3. Step 3: Cross multiply
    28,434.12x = 39,255.66 × 18,886.92
  4. Step 4: Simplify right side
    28,434.12x = 741,418,509.97
  5. Step 5: Solve for x
    x = 741,418,509.97/28,434.12
  6. Step 6: Final answer
    x = 26,074.96

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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.