Home / 15,375,751.87-21,223,881.22-8,851,981.43

Finding the Fourth Proportional to 15,375,751.87, 21,223,881.22 and 8,851,981.43

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Solution

The fourth proportional to 15,375,751.87, 21,223,881.22 and 8,851,981.43 is: 12,218,810.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,375,751.87 : 21,223,881.22 = 8,851,981.43 : x
  2. Step 2: Convert to fraction form
    15,375,751.87/21,223,881.22 = 8,851,981.43/x
  3. Step 3: Cross multiply
    15,375,751.87x = 21,223,881.22 × 8,851,981.43
  4. Step 4: Simplify right side
    15,375,751.87x = 187,873,402,431,965.72
  5. Step 5: Solve for x
    x = 187,873,402,431,965.72/15,375,751.87
  6. Step 6: Final answer
    x = 12,218,810.76

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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.