Home / 12,386,771.20-18,543,415.20-9,205,998.40

Finding the Fourth Proportional to 12,386,771.20, 18,543,415.20 and 9,205,998.40

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Solution

The fourth proportional to 12,386,771.20, 18,543,415.20 and 9,205,998.40 is: 13,781,690.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,386,771.20 : 18,543,415.20 = 9,205,998.40 : x
  2. Step 2: Convert to fraction form
    12,386,771.20/18,543,415.20 = 9,205,998.40/x
  3. Step 3: Cross multiply
    12,386,771.20x = 18,543,415.20 × 9,205,998.40
  4. Step 4: Simplify right side
    12,386,771.20x = 170,710,650,661,735.69
  5. Step 5: Solve for x
    x = 170,710,650,661,735.69/12,386,771.20
  6. Step 6: Final answer
    x = 13,781,690.80

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1.5x scale

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.