Home / 13,348.20-18,419.29-7,681.44

Finding the Fourth Proportional to 13,348.20, 18,419.29 and 7,681.44

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Solution

The fourth proportional to 13,348.20, 18,419.29 and 7,681.44 is: 10,599.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.20 : 18,419.29 = 7,681.44 : x
  2. Step 2: Convert to fraction form
    13,348.20/18,419.29 = 7,681.44/x
  3. Step 3: Cross multiply
    13,348.20x = 18,419.29 × 7,681.44
  4. Step 4: Simplify right side
    13,348.20x = 141,486,670.98
  5. Step 5: Solve for x
    x = 141,486,670.98/13,348.20
  6. Step 6: Final answer
    x = 10,599.68

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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.