Home / 20,663,432.28-28,503,662.40-12,915,027.36

Finding the Fourth Proportional to 20,663,432.28, 28,503,662.40 and 12,915,027.36

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Solution

The fourth proportional to 20,663,432.28, 28,503,662.40 and 12,915,027.36 is: 17,815,316.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663,432.28 : 28,503,662.40 = 12,915,027.36 : x
  2. Step 2: Convert to fraction form
    20,663,432.28/28,503,662.40 = 12,915,027.36/x
  3. Step 3: Cross multiply
    20,663,432.28x = 28,503,662.40 × 12,915,027.36
  4. Step 4: Simplify right side
    20,663,432.28x = 368,125,579,756,203.25
  5. Step 5: Solve for x
    x = 368,125,579,756,203.25/20,663,432.28
  6. Step 6: Final answer
    x = 17,815,316.20

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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.