Home / 20,988,417.82-28,948,598.94-13,911,211.66

Finding the Fourth Proportional to 20,988,417.82, 28,948,598.94 and 13,911,211.66

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Solution

The fourth proportional to 20,988,417.82, 28,948,598.94 and 13,911,211.66 is: 19,187,253.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988,417.82 : 28,948,598.94 = 13,911,211.66 : x
  2. Step 2: Convert to fraction form
    20,988,417.82/28,948,598.94 = 13,911,211.66/x
  3. Step 3: Cross multiply
    20,988,417.82x = 28,948,598.94 × 13,911,211.66
  4. Step 4: Simplify right side
    20,988,417.82x = 402,710,087,114,791.69
  5. Step 5: Solve for x
    x = 402,710,087,114,791.69/20,988,417.82
  6. Step 6: Final answer
    x = 19,187,253.21

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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.