Home / 20,497,960.90-28,287,243.05-11,205,643.25

Finding the Fourth Proportional to 20,497,960.90, 28,287,243.05 and 11,205,643.25

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Solution

The fourth proportional to 20,497,960.90, 28,287,243.05 and 11,205,643.25 is: 15,463,818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,497,960.90 : 28,287,243.05 = 11,205,643.25 : x
  2. Step 2: Convert to fraction form
    20,497,960.90/28,287,243.05 = 11,205,643.25/x
  3. Step 3: Cross multiply
    20,497,960.90x = 28,287,243.05 × 11,205,643.25
  4. Step 4: Simplify right side
    20,497,960.90x = 316,976,754,144,341.94
  5. Step 5: Solve for x
    x = 316,976,754,144,341.94/20,497,960.90
  6. Step 6: Final answer
    x = 15,463,818.85

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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.