Home / 15,081.87-20,807.28-11,112.46

Finding the Fourth Proportional to 15,081.87, 20,807.28 and 11,112.46

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Solution

The fourth proportional to 15,081.87, 20,807.28 and 11,112.46 is: 15,330.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.87 : 20,807.28 = 11,112.46 : x
  2. Step 2: Convert to fraction form
    15,081.87/20,807.28 = 11,112.46/x
  3. Step 3: Cross multiply
    15,081.87x = 20,807.28 × 11,112.46
  4. Step 4: Simplify right side
    15,081.87x = 231,220,066.71
  5. Step 5: Solve for x
    x = 231,220,066.71/15,081.87
  6. Step 6: Final answer
    x = 15,330.99

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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.