Home / 12,803,776.20-17,668,105.56-7,221,715.47

Finding the Fourth Proportional to 12,803,776.20, 17,668,105.56 and 7,221,715.47

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Solution

The fourth proportional to 12,803,776.20, 17,668,105.56 and 7,221,715.47 is: 9,965,343.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803,776.20 : 17,668,105.56 = 7,221,715.47 : x
  2. Step 2: Convert to fraction form
    12,803,776.20/17,668,105.56 = 7,221,715.47/x
  3. Step 3: Cross multiply
    12,803,776.20x = 17,668,105.56 × 7,221,715.47
  4. Step 4: Simplify right side
    12,803,776.20x = 127,594,031,248,245
  5. Step 5: Solve for x
    x = 127,594,031,248,245/12,803,776.20
  6. Step 6: Final answer
    x = 9,965,343.76

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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.