Home / 20,689,683.08-31,034,524.61-18,417,772.80

Finding the Fourth Proportional to 20,689,683.08, 31,034,524.61 and 18,417,772.80

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Solution

The fourth proportional to 20,689,683.08, 31,034,524.61 and 18,417,772.80 is: 27,626,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,683.08 : 31,034,524.61 = 18,417,772.80 : x
  2. Step 2: Convert to fraction form
    20,689,683.08/31,034,524.61 = 18,417,772.80/x
  3. Step 3: Cross multiply
    20,689,683.08x = 31,034,524.61 × 18,417,772.80
  4. Step 4: Simplify right side
    20,689,683.08x = 571,586,823,269,033.12
  5. Step 5: Solve for x
    x = 571,586,823,269,033.12/20,689,683.08
  6. Step 6: Final answer
    x = 27,626,659.20

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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.