Home / 13,360.40-19,997.40-10,422.80

Finding the Fourth Proportional to 13,360.40, 19,997.40 and 10,422.80

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Solution

The fourth proportional to 13,360.40, 19,997.40 and 10,422.80 is: 15,600.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,360.40 : 19,997.40 = 10,422.80 : x
  2. Step 2: Convert to fraction form
    13,360.40/19,997.40 = 10,422.80/x
  3. Step 3: Cross multiply
    13,360.40x = 19,997.40 × 10,422.80
  4. Step 4: Simplify right side
    13,360.40x = 208,428,900.72
  5. Step 5: Solve for x
    x = 208,428,900.72/13,360.40
  6. Step 6: Final answer
    x = 15,600.50

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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.