Home / 20,001,986.70-30,002,980.05-19,218,165.90

Finding the Fourth Proportional to 20,001,986.70, 30,002,980.05 and 19,218,165.90

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Solution

The fourth proportional to 20,001,986.70, 30,002,980.05 and 19,218,165.90 is: 28,827,248.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001,986.70 : 30,002,980.05 = 19,218,165.90 : x
  2. Step 2: Convert to fraction form
    20,001,986.70/30,002,980.05 = 19,218,165.90/x
  3. Step 3: Cross multiply
    20,001,986.70x = 30,002,980.05 × 19,218,165.90
  4. Step 4: Simplify right side
    20,001,986.70x = 576,602,248,095,290.25
  5. Step 5: Solve for x
    x = 576,602,248,095,290.25/20,001,986.70
  6. Step 6: Final answer
    x = 28,827,248.85

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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.