Home / 13,353.30-18,427.68-7,384.86

Finding the Fourth Proportional to 13,353.30, 18,427.68 and 7,384.86

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Solution

The fourth proportional to 13,353.30, 18,427.68 and 7,384.86 is: 10,191.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.30 : 18,427.68 = 7,384.86 : x
  2. Step 2: Convert to fraction form
    13,353.30/18,427.68 = 7,384.86/x
  3. Step 3: Cross multiply
    13,353.30x = 18,427.68 × 7,384.86
  4. Step 4: Simplify right side
    13,353.30x = 136,085,836.92
  5. Step 5: Solve for x
    x = 136,085,836.92/13,353.30
  6. Step 6: Final answer
    x = 10,191.18

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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.