Home / 15,111,646.72-20,853,799.68-8,236,080.64

Finding the Fourth Proportional to 15,111,646.72, 20,853,799.68 and 8,236,080.64

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Solution

The fourth proportional to 15,111,646.72, 20,853,799.68 and 8,236,080.64 is: 11,365,642.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111,646.72 : 20,853,799.68 = 8,236,080.64 : x
  2. Step 2: Convert to fraction form
    15,111,646.72/20,853,799.68 = 8,236,080.64/x
  3. Step 3: Cross multiply
    15,111,646.72x = 20,853,799.68 × 8,236,080.64
  4. Step 4: Simplify right side
    15,111,646.72x = 171,753,575,814,886.19
  5. Step 5: Solve for x
    x = 171,753,575,814,886.19/15,111,646.72
  6. Step 6: Final answer
    x = 11,365,642.61

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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.