Home / 21,087,009.60-31,567,528.80-12,562,958.40

Finding the Fourth Proportional to 21,087,009.60, 31,567,528.80 and 12,562,958.40

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Solution

The fourth proportional to 21,087,009.60, 31,567,528.80 and 12,562,958.40 is: 18,806,912.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087,009.60 : 31,567,528.80 = 12,562,958.40 : x
  2. Step 2: Convert to fraction form
    21,087,009.60/31,567,528.80 = 12,562,958.40/x
  3. Step 3: Cross multiply
    21,087,009.60x = 31,567,528.80 × 12,562,958.40
  4. Step 4: Simplify right side
    21,087,009.60x = 396,581,551,105,201.94
  5. Step 5: Solve for x
    x = 396,581,551,105,201.94/21,087,009.60
  6. Step 6: Final answer
    x = 18,806,912.82

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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.