Home / 13,328.30-18,393.81-7,359.95

Finding the Fourth Proportional to 13,328.30, 18,393.81 and 7,359.95

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Solution

The fourth proportional to 13,328.30, 18,393.81 and 7,359.95 is: 10,157.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.30 : 18,393.81 = 7,359.95 : x
  2. Step 2: Convert to fraction form
    13,328.30/18,393.81 = 7,359.95/x
  3. Step 3: Cross multiply
    13,328.30x = 18,393.81 × 7,359.95
  4. Step 4: Simplify right side
    13,328.30x = 135,377,521.91
  5. Step 5: Solve for x
    x = 135,377,521.91/13,328.30
  6. Step 6: Final answer
    x = 10,157.15

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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.