Home / 12,561,687.60-18,842,531.40-11,721,879.60

Finding the Fourth Proportional to 12,561,687.60, 18,842,531.40 and 11,721,879.60

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Solution

The fourth proportional to 12,561,687.60, 18,842,531.40 and 11,721,879.60 is: 17,582,819.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,561,687.60 : 18,842,531.40 = 11,721,879.60 : x
  2. Step 2: Convert to fraction form
    12,561,687.60/18,842,531.40 = 11,721,879.60/x
  3. Step 3: Cross multiply
    12,561,687.60x = 18,842,531.40 × 11,721,879.60
  4. Step 4: Simplify right side
    12,561,687.60x = 220,869,884,430,019.41
  5. Step 5: Solve for x
    x = 220,869,884,430,019.41/12,561,687.60
  6. Step 6: Final answer
    x = 17,582,819.40

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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.