Home / 15,185.13-20,956.41-8,470.77

Finding the Fourth Proportional to 15,185.13, 20,956.41 and 8,470.77

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Solution

The fourth proportional to 15,185.13, 20,956.41 and 8,470.77 is: 11,690.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.13 : 20,956.41 = 8,470.77 : x
  2. Step 2: Convert to fraction form
    15,185.13/20,956.41 = 8,470.77/x
  3. Step 3: Cross multiply
    15,185.13x = 20,956.41 × 8,470.77
  4. Step 4: Simplify right side
    15,185.13x = 177,516,929.14
  5. Step 5: Solve for x
    x = 177,516,929.14/15,185.13
  6. Step 6: Final answer
    x = 11,690.18

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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.