Home / 13,220.28-19,823.13-5,419.98

Finding the Fourth Proportional to 13,220.28, 19,823.13 and 5,419.98

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Solution

The fourth proportional to 13,220.28, 19,823.13 and 5,419.98 is: 8,126.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.28 : 19,823.13 = 5,419.98 : x
  2. Step 2: Convert to fraction form
    13,220.28/19,823.13 = 5,419.98/x
  3. Step 3: Cross multiply
    13,220.28x = 19,823.13 × 5,419.98
  4. Step 4: Simplify right side
    13,220.28x = 107,440,968.14
  5. Step 5: Solve for x
    x = 107,440,968.14/13,220.28
  6. Step 6: Final answer
    x = 8,126.98

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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.