Home / 13,259,321.40-19,888,982.10-11,131,807.80

Finding the Fourth Proportional to 13,259,321.40, 19,888,982.10 and 11,131,807.80

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Solution

The fourth proportional to 13,259,321.40, 19,888,982.10 and 11,131,807.80 is: 16,697,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259,321.40 : 19,888,982.10 = 11,131,807.80 : x
  2. Step 2: Convert to fraction form
    13,259,321.40/19,888,982.10 = 11,131,807.80/x
  3. Step 3: Cross multiply
    13,259,321.40x = 19,888,982.10 × 11,131,807.80
  4. Step 4: Simplify right side
    13,259,321.40x = 221,400,326,074,840.41
  5. Step 5: Solve for x
    x = 221,400,326,074,840.41/13,259,321.40
  6. Step 6: Final answer
    x = 16,697,711.70

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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.