Home / 20,218,304.88-27,898,142.94-11,515,368.01

Finding the Fourth Proportional to 20,218,304.88, 27,898,142.94 and 11,515,368.01

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Solution

The fourth proportional to 20,218,304.88, 27,898,142.94 and 11,515,368.01 is: 15,889,432.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,304.88 : 27,898,142.94 = 11,515,368.01 : x
  2. Step 2: Convert to fraction form
    20,218,304.88/27,898,142.94 = 11,515,368.01/x
  3. Step 3: Cross multiply
    20,218,304.88x = 27,898,142.94 × 11,515,368.01
  4. Step 4: Simplify right side
    20,218,304.88x = 321,257,382,749,683.38
  5. Step 5: Solve for x
    x = 321,257,382,749,683.38/20,218,304.88
  6. Step 6: Final answer
    x = 15,889,432.11

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1.5x scale

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.