Home / 15,315,083.12-21,134,542.20-8,345,821.52

Finding the Fourth Proportional to 15,315,083.12, 21,134,542.20 and 8,345,821.52

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Solution

The fourth proportional to 15,315,083.12, 21,134,542.20 and 8,345,821.52 is: 11,517,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315,083.12 : 21,134,542.20 = 8,345,821.52 : x
  2. Step 2: Convert to fraction form
    15,315,083.12/21,134,542.20 = 8,345,821.52/x
  3. Step 3: Cross multiply
    15,315,083.12x = 21,134,542.20 × 8,345,821.52
  4. Step 4: Simplify right side
    15,315,083.12x = 176,385,117,108,108.12
  5. Step 5: Solve for x
    x = 176,385,117,108,108.12/15,315,083.12
  6. Step 6: Final answer
    x = 11,517,085.20

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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.