Home / 20,417,031.78-28,177,489.40-15,251,425.26

Finding the Fourth Proportional to 20,417,031.78, 28,177,489.40 and 15,251,425.26

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Solution

The fourth proportional to 20,417,031.78, 28,177,489.40 and 15,251,425.26 is: 21,048,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417,031.78 : 28,177,489.40 = 15,251,425.26 : x
  2. Step 2: Convert to fraction form
    20,417,031.78/28,177,489.40 = 15,251,425.26/x
  3. Step 3: Cross multiply
    20,417,031.78x = 28,177,489.40 × 15,251,425.26
  4. Step 4: Simplify right side
    20,417,031.78x = 429,746,873,598,542.19
  5. Step 5: Solve for x
    x = 429,746,873,598,542.19/20,417,031.78
  6. Step 6: Final answer
    x = 21,048,450.05

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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.