Home / 20,835,586.40-31,203,613.20-12,773,429.60

Finding the Fourth Proportional to 20,835,586.40, 31,203,613.20 and 12,773,429.60

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Solution

The fourth proportional to 20,835,586.40, 31,203,613.20 and 12,773,429.60 is: 19,129,634.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835,586.40 : 31,203,613.20 = 12,773,429.60 : x
  2. Step 2: Convert to fraction form
    20,835,586.40/31,203,613.20 = 12,773,429.60/x
  3. Step 3: Cross multiply
    20,835,586.40x = 31,203,613.20 × 12,773,429.60
  4. Step 4: Simplify right side
    20,835,586.40x = 398,577,156,475,830.69
  5. Step 5: Solve for x
    x = 398,577,156,475,830.69/20,835,586.40
  6. Step 6: Final answer
    x = 19,129,634.69

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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.