Home / 12,760,143.60-19,140,215.40-7,020,580.80

Finding the Fourth Proportional to 12,760,143.60, 19,140,215.40 and 7,020,580.80

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Solution

The fourth proportional to 12,760,143.60, 19,140,215.40 and 7,020,580.80 is: 10,530,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760,143.60 : 19,140,215.40 = 7,020,580.80 : x
  2. Step 2: Convert to fraction form
    12,760,143.60/19,140,215.40 = 7,020,580.80/x
  3. Step 3: Cross multiply
    12,760,143.60x = 19,140,215.40 × 7,020,580.80
  4. Step 4: Simplify right side
    12,760,143.60x = 134,375,428,745,104.31
  5. Step 5: Solve for x
    x = 134,375,428,745,104.31/12,760,143.60
  6. Step 6: Final answer
    x = 10,530,871.20

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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.