Home / 20,898,011.80-31,347,017.70-18,665,959.60

Finding the Fourth Proportional to 20,898,011.80, 31,347,017.70 and 18,665,959.60

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Solution

The fourth proportional to 20,898,011.80, 31,347,017.70 and 18,665,959.60 is: 27,998,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898,011.80 : 31,347,017.70 = 18,665,959.60 : x
  2. Step 2: Convert to fraction form
    20,898,011.80/31,347,017.70 = 18,665,959.60/x
  3. Step 3: Cross multiply
    20,898,011.80x = 31,347,017.70 × 18,665,959.60
  4. Step 4: Simplify right side
    20,898,011.80x = 585,122,165,968,685
  5. Step 5: Solve for x
    x = 585,122,165,968,685/20,898,011.80
  6. Step 6: Final answer
    x = 27,998,939.40

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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.