Home / 20,668,744.80-31,003,117.20-13,488,386.40

Finding the Fourth Proportional to 20,668,744.80, 31,003,117.20 and 13,488,386.40

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Solution

The fourth proportional to 20,668,744.80, 31,003,117.20 and 13,488,386.40 is: 20,232,579.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668,744.80 : 31,003,117.20 = 13,488,386.40 : x
  2. Step 2: Convert to fraction form
    20,668,744.80/31,003,117.20 = 13,488,386.40/x
  3. Step 3: Cross multiply
    20,668,744.80x = 31,003,117.20 × 13,488,386.40
  4. Step 4: Simplify right side
    20,668,744.80x = 418,182,024,398,086.06
  5. Step 5: Solve for x
    x = 418,182,024,398,086.06/20,668,744.80
  6. Step 6: Final answer
    x = 20,232,579.60

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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.