Home / 20,807,471.80-31,211,207.70-18,288,047.80

Finding the Fourth Proportional to 20,807,471.80, 31,211,207.70 and 18,288,047.80

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Solution

The fourth proportional to 20,807,471.80, 31,211,207.70 and 18,288,047.80 is: 27,432,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,471.80 : 31,211,207.70 = 18,288,047.80 : x
  2. Step 2: Convert to fraction form
    20,807,471.80/31,211,207.70 = 18,288,047.80/x
  3. Step 3: Cross multiply
    20,807,471.80x = 31,211,207.70 × 18,288,047.80
  4. Step 4: Simplify right side
    20,807,471.80x = 570,792,058,313,328.12
  5. Step 5: Solve for x
    x = 570,792,058,313,328.12/20,807,471.80
  6. Step 6: Final answer
    x = 27,432,071.70

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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.