Home / 20,943,963.40-31,391,061.90-8,813,403.40

Finding the Fourth Proportional to 20,943,963.40, 31,391,061.90 and 8,813,403.40

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Solution

The fourth proportional to 20,943,963.40, 31,391,061.90 and 8,813,403.40 is: 13,209,634.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943,963.40 : 31,391,061.90 = 8,813,403.40 : x
  2. Step 2: Convert to fraction form
    20,943,963.40/31,391,061.90 = 8,813,403.40/x
  3. Step 3: Cross multiply
    20,943,963.40x = 31,391,061.90 × 8,813,403.40
  4. Step 4: Simplify right side
    20,943,963.40x = 276,662,091,679,070.47
  5. Step 5: Solve for x
    x = 276,662,091,679,070.47/20,943,963.40
  6. Step 6: Final answer
    x = 13,209,634.03

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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.