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Finding the Fourth Proportional to 18,702,703.80, 28,051,982.10 and 15,331,030.20

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Solution

The fourth proportional to 18,702,703.80, 28,051,982.10 and 15,331,030.20 is: 22,994,845.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,702,703.80 : 28,051,982.10 = 15,331,030.20 : x
  2. Step 2: Convert to fraction form
    18,702,703.80/28,051,982.10 = 15,331,030.20/x
  3. Step 3: Cross multiply
    18,702,703.80x = 28,051,982.10 × 15,331,030.20
  4. Step 4: Simplify right side
    18,702,703.80x = 430,065,784,744,959.44
  5. Step 5: Solve for x
    x = 430,065,784,744,959.44/18,702,703.80
  6. Step 6: Final answer
    x = 22,994,845.52

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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.