Home / 21,368,726.47-29,485,581-12,072,904.78

Finding the Fourth Proportional to 21,368,726.47, 29,485,581 and 12,072,904.78

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Solution

The fourth proportional to 21,368,726.47, 29,485,581 and 12,072,904.78 is: 16,658,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,368,726.47 : 29,485,581 = 12,072,904.78 : x
  2. Step 2: Convert to fraction form
    21,368,726.47/29,485,581 = 12,072,904.78/x
  3. Step 3: Cross multiply
    21,368,726.47x = 29,485,581 × 12,072,904.78
  4. Step 4: Simplify right side
    21,368,726.47x = 355,976,611,795,977.19
  5. Step 5: Solve for x
    x = 355,976,611,795,977.19/21,368,726.47
  6. Step 6: Final answer
    x = 16,658,765.90

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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.