Home / 15,442,910.70-21,313,106.78-8,916,529.20

Finding the Fourth Proportional to 15,442,910.70, 21,313,106.78 and 8,916,529.20

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Solution

The fourth proportional to 15,442,910.70, 21,313,106.78 and 8,916,529.20 is: 12,305,901.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442,910.70 : 21,313,106.78 = 8,916,529.20 : x
  2. Step 2: Convert to fraction form
    15,442,910.70/21,313,106.78 = 8,916,529.20/x
  3. Step 3: Cross multiply
    15,442,910.70x = 21,313,106.78 × 8,916,529.20
  4. Step 4: Simplify right side
    15,442,910.70x = 190,038,938,946,587.97
  5. Step 5: Solve for x
    x = 190,038,938,946,587.97/15,442,910.70
  6. Step 6: Final answer
    x = 12,305,901.56

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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.