Home / 15,686,985.72-21,644,682.30-9,157,652.04

Finding the Fourth Proportional to 15,686,985.72, 21,644,682.30 and 9,157,652.04

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Solution

The fourth proportional to 15,686,985.72, 21,644,682.30 and 9,157,652.04 is: 12,635,599.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,985.72 : 21,644,682.30 = 9,157,652.04 : x
  2. Step 2: Convert to fraction form
    15,686,985.72/21,644,682.30 = 9,157,652.04/x
  3. Step 3: Cross multiply
    15,686,985.72x = 21,644,682.30 × 9,157,652.04
  4. Step 4: Simplify right side
    15,686,985.72x = 198,214,469,019,746.88
  5. Step 5: Solve for x
    x = 198,214,469,019,746.88/15,686,985.72
  6. Step 6: Final answer
    x = 12,635,599.51

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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.