Home / 20,807,480.80-31,211,221.20-18,288,056.80

Finding the Fourth Proportional to 20,807,480.80, 31,211,221.20 and 18,288,056.80

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Solution

The fourth proportional to 20,807,480.80, 31,211,221.20 and 18,288,056.80 is: 27,432,085.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807,480.80 : 31,211,221.20 = 18,288,056.80 : x
  2. Step 2: Convert to fraction form
    20,807,480.80/31,211,221.20 = 18,288,056.80/x
  3. Step 3: Cross multiply
    20,807,480.80x = 31,211,221.20 × 18,288,056.80
  4. Step 4: Simplify right side
    20,807,480.80x = 570,792,586,102,964.12
  5. Step 5: Solve for x
    x = 570,792,586,102,964.12/20,807,480.80
  6. Step 6: Final answer
    x = 27,432,085.20

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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.