Home / 20,727,843.78-28,604,264.65-11,435,805.47

Finding the Fourth Proportional to 20,727,843.78, 28,604,264.65 and 11,435,805.47

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Solution

The fourth proportional to 20,727,843.78, 28,604,264.65 and 11,435,805.47 is: 15,781,323.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727,843.78 : 28,604,264.65 = 11,435,805.47 : x
  2. Step 2: Convert to fraction form
    20,727,843.78/28,604,264.65 = 11,435,805.47/x
  3. Step 3: Cross multiply
    20,727,843.78x = 28,604,264.65 × 11,435,805.47
  4. Step 4: Simplify right side
    20,727,843.78x = 327,112,806,192,718.81
  5. Step 5: Solve for x
    x = 327,112,806,192,718.81/20,727,843.78
  6. Step 6: Final answer
    x = 15,781,323.41

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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.