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Finding the Fourth Proportional to 18,443,807.70, 27,665,711.55 and 17,912,366.70

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Solution

The fourth proportional to 18,443,807.70, 27,665,711.55 and 17,912,366.70 is: 26,868,550.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,443,807.70 : 27,665,711.55 = 17,912,366.70 : x
  2. Step 2: Convert to fraction form
    18,443,807.70/27,665,711.55 = 17,912,366.70/x
  3. Step 3: Cross multiply
    18,443,807.70x = 27,665,711.55 × 17,912,366.70
  4. Step 4: Simplify right side
    18,443,807.70x = 495,558,370,300,025.38
  5. Step 5: Solve for x
    x = 495,558,370,300,025.38/18,443,807.70
  6. Step 6: Final answer
    x = 26,868,550.05

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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.