Home / 12,456,473.70-18,684,710.55-11,978,176.80

Finding the Fourth Proportional to 12,456,473.70, 18,684,710.55 and 11,978,176.80

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Solution

The fourth proportional to 12,456,473.70, 18,684,710.55 and 11,978,176.80 is: 17,967,265.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,473.70 : 18,684,710.55 = 11,978,176.80 : x
  2. Step 2: Convert to fraction form
    12,456,473.70/18,684,710.55 = 11,978,176.80/x
  3. Step 3: Cross multiply
    12,456,473.70x = 18,684,710.55 × 11,978,176.80
  4. Step 4: Simplify right side
    12,456,473.70x = 223,808,766,424,725.25
  5. Step 5: Solve for x
    x = 223,808,766,424,725.25/12,456,473.70
  6. Step 6: Final answer
    x = 17,967,265.20

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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.