Home / 20,901.81-28,844.73-11,470.17

Finding the Fourth Proportional to 20,901.81, 28,844.73 and 11,470.17

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Solution

The fourth proportional to 20,901.81, 28,844.73 and 11,470.17 is: 15,828.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901.81 : 28,844.73 = 11,470.17 : x
  2. Step 2: Convert to fraction form
    20,901.81/28,844.73 = 11,470.17/x
  3. Step 3: Cross multiply
    20,901.81x = 28,844.73 × 11,470.17
  4. Step 4: Simplify right side
    20,901.81x = 330,853,956.70
  5. Step 5: Solve for x
    x = 330,853,956.70/20,901.81
  6. Step 6: Final answer
    x = 15,828.96

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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.