Home / 13,353.21-18,428.31-7,384.95

Finding the Fourth Proportional to 13,353.21, 18,428.31 and 7,384.95

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Solution

The fourth proportional to 13,353.21, 18,428.31 and 7,384.95 is: 10,191.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.21 : 18,428.31 = 7,384.95 : x
  2. Step 2: Convert to fraction form
    13,353.21/18,428.31 = 7,384.95/x
  3. Step 3: Cross multiply
    13,353.21x = 18,428.31 × 7,384.95
  4. Step 4: Simplify right side
    13,353.21x = 136,092,147.93
  5. Step 5: Solve for x
    x = 136,092,147.93/13,353.21
  6. Step 6: Final answer
    x = 10,191.72

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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.