Home / 15,686,989.47-21,644,687.48-9,157,655.79

Finding the Fourth Proportional to 15,686,989.47, 21,644,687.48 and 9,157,655.79

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Solution

The fourth proportional to 15,686,989.47, 21,644,687.48 and 9,157,655.79 is: 12,635,604.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,989.47 : 21,644,687.48 = 9,157,655.79 : x
  2. Step 2: Convert to fraction form
    15,686,989.47/21,644,687.48 = 9,157,655.79/x
  3. Step 3: Cross multiply
    15,686,989.47x = 21,644,687.48 × 9,157,655.79
  4. Step 4: Simplify right side
    15,686,989.47x = 198,214,597,578,174.22
  5. Step 5: Solve for x
    x = 198,214,597,578,174.22/15,686,989.47
  6. Step 6: Final answer
    x = 12,635,604.68

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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.