Home / 15,219,321.63-21,003,985.71-8,345,132.30

Finding the Fourth Proportional to 15,219,321.63, 21,003,985.71 and 8,345,132.30

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Solution

The fourth proportional to 15,219,321.63, 21,003,985.71 and 8,345,132.30 is: 11,517,007.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219,321.63 : 21,003,985.71 = 8,345,132.30 : x
  2. Step 2: Convert to fraction form
    15,219,321.63/21,003,985.71 = 8,345,132.30/x
  3. Step 3: Cross multiply
    15,219,321.63x = 21,003,985.71 × 8,345,132.30
  4. Step 4: Simplify right side
    15,219,321.63x = 175,281,039,472,239.50
  5. Step 5: Solve for x
    x = 175,281,039,472,239.50/15,219,321.63
  6. Step 6: Final answer
    x = 11,517,007.38

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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.