Home / 13,891.28-19,169.80-7,603.60

Finding the Fourth Proportional to 13,891.28, 19,169.80 and 7,603.60

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Solution

The fourth proportional to 13,891.28, 19,169.80 and 7,603.60 is: 10,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.28 : 19,169.80 = 7,603.60 : x
  2. Step 2: Convert to fraction form
    13,891.28/19,169.80 = 7,603.60/x
  3. Step 3: Cross multiply
    13,891.28x = 19,169.80 × 7,603.60
  4. Step 4: Simplify right side
    13,891.28x = 145,759,491.28
  5. Step 5: Solve for x
    x = 145,759,491.28/13,891.28
  6. Step 6: Final answer
    x = 10,492.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.