Home / 20,668,745.80-31,003,118.70-13,488,387.40

Finding the Fourth Proportional to 20,668,745.80, 31,003,118.70 and 13,488,387.40

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Solution

The fourth proportional to 20,668,745.80, 31,003,118.70 and 13,488,387.40 is: 20,232,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668,745.80 : 31,003,118.70 = 13,488,387.40 : x
  2. Step 2: Convert to fraction form
    20,668,745.80/31,003,118.70 = 13,488,387.40/x
  3. Step 3: Cross multiply
    20,668,745.80x = 31,003,118.70 × 13,488,387.40
  4. Step 4: Simplify right side
    20,668,745.80x = 418,182,075,633,784.38
  5. Step 5: Solve for x
    x = 418,182,075,633,784.38/20,668,745.80
  6. Step 6: Final answer
    x = 20,232,581.10

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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.