Home / 15,133.20-20,886.52-9,169.96

Finding the Fourth Proportional to 15,133.20, 20,886.52 and 9,169.96

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Solution

The fourth proportional to 15,133.20, 20,886.52 and 9,169.96 is: 12,656.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,133.20 : 20,886.52 = 9,169.96 : x
  2. Step 2: Convert to fraction form
    15,133.20/20,886.52 = 9,169.96/x
  3. Step 3: Cross multiply
    15,133.20x = 20,886.52 × 9,169.96
  4. Step 4: Simplify right side
    15,133.20x = 191,528,552.94
  5. Step 5: Solve for x
    x = 191,528,552.94/15,133.20
  6. Step 6: Final answer
    x = 12,656.18

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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.