Home / 15,686,988.72-21,644,686.44-9,157,655.04

Finding the Fourth Proportional to 15,686,988.72, 21,644,686.44 and 9,157,655.04

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Solution

The fourth proportional to 15,686,988.72, 21,644,686.44 and 9,157,655.04 is: 12,635,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,988.72 : 21,644,686.44 = 9,157,655.04 : x
  2. Step 2: Convert to fraction form
    15,686,988.72/21,644,686.44 = 9,157,655.04/x
  3. Step 3: Cross multiply
    15,686,988.72x = 21,644,686.44 × 9,157,655.04
  4. Step 4: Simplify right side
    15,686,988.72x = 198,214,571,866,485.66
  5. Step 5: Solve for x
    x = 198,214,571,866,485.66/15,686,988.72
  6. Step 6: Final answer
    x = 12,635,603.65

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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.