Home / 20,686,312.80-31,029,469.20-18,454,260.60

Finding the Fourth Proportional to 20,686,312.80, 31,029,469.20 and 18,454,260.60

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Solution

The fourth proportional to 20,686,312.80, 31,029,469.20 and 18,454,260.60 is: 27,681,390.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686,312.80 : 31,029,469.20 = 18,454,260.60 : x
  2. Step 2: Convert to fraction form
    20,686,312.80/31,029,469.20 = 18,454,260.60/x
  3. Step 3: Cross multiply
    20,686,312.80x = 31,029,469.20 × 18,454,260.60
  4. Step 4: Simplify right side
    20,686,312.80x = 572,625,910,896,473.50
  5. Step 5: Solve for x
    x = 572,625,910,896,473.50/20,686,312.80
  6. Step 6: Final answer
    x = 27,681,390.90

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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.