Home / 20,956,827.40-28,920,377.78-11,789,470.16

Finding the Fourth Proportional to 20,956,827.40, 28,920,377.78 and 11,789,470.16

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Solution

The fourth proportional to 20,956,827.40, 28,920,377.78 and 11,789,470.16 is: 16,269,444.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956,827.40 : 28,920,377.78 = 11,789,470.16 : x
  2. Step 2: Convert to fraction form
    20,956,827.40/28,920,377.78 = 11,789,470.16/x
  3. Step 3: Cross multiply
    20,956,827.40x = 28,920,377.78 × 11,789,470.16
  4. Step 4: Simplify right side
    20,956,827.40x = 340,955,930,853,237.06
  5. Step 5: Solve for x
    x = 340,955,930,853,237.06/20,956,827.40
  6. Step 6: Final answer
    x = 16,269,444.05

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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.