Home / 20,706,470.40-31,024,276.20-13,124,578.80

Finding the Fourth Proportional to 20,706,470.40, 31,024,276.20 and 13,124,578.80

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Solution

The fourth proportional to 20,706,470.40, 31,024,276.20 and 13,124,578.80 is: 19,664,411.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706,470.40 : 31,024,276.20 = 13,124,578.80 : x
  2. Step 2: Convert to fraction form
    20,706,470.40/31,024,276.20 = 13,124,578.80/x
  3. Step 3: Cross multiply
    20,706,470.40x = 31,024,276.20 × 13,124,578.80
  4. Step 4: Simplify right side
    20,706,470.40x = 407,180,557,699,864.56
  5. Step 5: Solve for x
    x = 407,180,557,699,864.56/20,706,470.40
  6. Step 6: Final answer
    x = 19,664,411.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.