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Finding the Fourth Proportional to 18,704,482.80, 28,056,724.20 and 17,665,220.40

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Solution

The fourth proportional to 18,704,482.80, 28,056,724.20 and 17,665,220.40 is: 26,497,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704,482.80 : 28,056,724.20 = 17,665,220.40 : x
  2. Step 2: Convert to fraction form
    18,704,482.80/28,056,724.20 = 17,665,220.40/x
  3. Step 3: Cross multiply
    18,704,482.80x = 28,056,724.20 × 17,665,220.40
  4. Step 4: Simplify right side
    18,704,482.80x = 495,628,216,695,013.62
  5. Step 5: Solve for x
    x = 495,628,216,695,013.62/18,704,482.80
  6. Step 6: Final answer
    x = 26,497,830.60

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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.