Home / 21,795,045.47-30,071,177.64-15,172,211.69

Finding the Fourth Proportional to 21,795,045.47, 30,071,177.64 and 15,172,211.69

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Solution

The fourth proportional to 21,795,045.47, 30,071,177.64 and 15,172,211.69 is: 20,933,485.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,795,045.47 : 30,071,177.64 = 15,172,211.69 : x
  2. Step 2: Convert to fraction form
    21,795,045.47/30,071,177.64 = 15,172,211.69/x
  3. Step 3: Cross multiply
    21,795,045.47x = 30,071,177.64 × 15,172,211.69
  4. Step 4: Simplify right side
    21,795,045.47x = 456,246,272,884,085.69
  5. Step 5: Solve for x
    x = 456,246,272,884,085.69/21,795,045.47
  6. Step 6: Final answer
    x = 20,933,485.71

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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.