Home / 15,686,995.50-21,644,695.74-9,157,661.82

Finding the Fourth Proportional to 15,686,995.50, 21,644,695.74 and 9,157,661.82

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Solution

The fourth proportional to 15,686,995.50, 21,644,695.74 and 9,157,661.82 is: 12,635,612.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,995.50 : 21,644,695.74 = 9,157,661.82 : x
  2. Step 2: Convert to fraction form
    15,686,995.50/21,644,695.74 = 9,157,661.82/x
  3. Step 3: Cross multiply
    15,686,995.50x = 21,644,695.74 × 9,157,661.82
  4. Step 4: Simplify right side
    15,686,995.50x = 198,214,803,783,714.62
  5. Step 5: Solve for x
    x = 198,214,803,783,714.62/15,686,995.50
  6. Step 6: Final answer
    x = 12,635,612.97

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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.