Home / 20,722,221.80-31,083,332.70-13,182,612.20

Finding the Fourth Proportional to 20,722,221.80, 31,083,332.70 and 13,182,612.20

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Solution

The fourth proportional to 20,722,221.80, 31,083,332.70 and 13,182,612.20 is: 19,773,918.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722,221.80 : 31,083,332.70 = 13,182,612.20 : x
  2. Step 2: Convert to fraction form
    20,722,221.80/31,083,332.70 = 13,182,612.20/x
  3. Step 3: Cross multiply
    20,722,221.80x = 31,083,332.70 × 13,182,612.20
  4. Step 4: Simplify right side
    20,722,221.80x = 409,759,520,867,678.94
  5. Step 5: Solve for x
    x = 409,759,520,867,678.94/20,722,221.80
  6. Step 6: Final answer
    x = 19,773,918.30

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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.