Home / 20,187,520.70-30,281,281.05-18,628,627.10

Finding the Fourth Proportional to 20,187,520.70, 30,281,281.05 and 18,628,627.10

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Solution

The fourth proportional to 20,187,520.70, 30,281,281.05 and 18,628,627.10 is: 27,942,940.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187,520.70 : 30,281,281.05 = 18,628,627.10 : x
  2. Step 2: Convert to fraction form
    20,187,520.70/30,281,281.05 = 18,628,627.10/x
  3. Step 3: Cross multiply
    20,187,520.70x = 30,281,281.05 × 18,628,627.10
  4. Step 4: Simplify right side
    20,187,520.70x = 564,098,692,790,746.50
  5. Step 5: Solve for x
    x = 564,098,692,790,746.50/20,187,520.70
  6. Step 6: Final answer
    x = 27,942,940.65

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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.