Home / 13,890,904.80-20,836,357.20-9,859,826.40

Finding the Fourth Proportional to 13,890,904.80, 20,836,357.20 and 9,859,826.40

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Solution

The fourth proportional to 13,890,904.80, 20,836,357.20 and 9,859,826.40 is: 14,789,739.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890,904.80 : 20,836,357.20 = 9,859,826.40 : x
  2. Step 2: Convert to fraction form
    13,890,904.80/20,836,357.20 = 9,859,826.40/x
  3. Step 3: Cross multiply
    13,890,904.80x = 20,836,357.20 × 9,859,826.40
  4. Step 4: Simplify right side
    13,890,904.80x = 205,442,864,800,390.09
  5. Step 5: Solve for x
    x = 205,442,864,800,390.09/13,890,904.80
  6. Step 6: Final answer
    x = 14,789,739.60

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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.