Home / 21,779,053.28-30,055,296.48-11,989,691.36

Finding the Fourth Proportional to 21,779,053.28, 30,055,296.48 and 11,989,691.36

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Solution

The fourth proportional to 21,779,053.28, 30,055,296.48 and 11,989,691.36 is: 16,545,885.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779,053.28 : 30,055,296.48 = 11,989,691.36 : x
  2. Step 2: Convert to fraction form
    21,779,053.28/30,055,296.48 = 11,989,691.36/x
  3. Step 3: Cross multiply
    21,779,053.28x = 30,055,296.48 × 11,989,691.36
  4. Step 4: Simplify right side
    21,779,053.28x = 360,353,728,528,494.38
  5. Step 5: Solve for x
    x = 360,353,728,528,494.38/21,779,053.28
  6. Step 6: Final answer
    x = 16,545,885.81

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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.