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Finding the Fourth Proportional to 18,443,809.20, 27,665,713.80 and 17,912,368.20

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Solution

The fourth proportional to 18,443,809.20, 27,665,713.80 and 17,912,368.20 is: 26,868,552.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443,809.20 : 27,665,713.80 = 17,912,368.20 : x
  2. Step 2: Convert to fraction form
    18,443,809.20/27,665,713.80 = 17,912,368.20/x
  3. Step 3: Cross multiply
    18,443,809.20x = 27,665,713.80 × 17,912,368.20
  4. Step 4: Simplify right side
    18,443,809.20x = 495,558,452,101,421.12
  5. Step 5: Solve for x
    x = 495,558,452,101,421.12/18,443,809.20
  6. Step 6: Final answer
    x = 26,868,552.30

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1.5x scale

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.