Home / 20,891,630.79-31,338,886.01-8,748,868.23

Finding the Fourth Proportional to 20,891,630.79, 31,338,886.01 and 8,748,868.23

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Solution

The fourth proportional to 20,891,630.79, 31,338,886.01 and 8,748,868.23 is: 13,123,905.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891,630.79 : 31,338,886.01 = 8,748,868.23 : x
  2. Step 2: Convert to fraction form
    20,891,630.79/31,338,886.01 = 8,748,868.23/x
  3. Step 3: Cross multiply
    20,891,630.79x = 31,338,886.01 × 8,748,868.23
  4. Step 4: Simplify right side
    20,891,630.79x = 274,179,784,132,736.12
  5. Step 5: Solve for x
    x = 274,179,784,132,736.12/20,891,630.79
  6. Step 6: Final answer
    x = 13,123,905.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.