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Finding the Fourth Proportional to 13,382.40, 20,030.40 and 10,444.80

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Solution

The fourth proportional to 13,382.40, 20,030.40 and 10,444.80 is: 15,633.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.40 : 20,030.40 = 10,444.80 : x
  2. Step 2: Convert to fraction form
    13,382.40/20,030.40 = 10,444.80/x
  3. Step 3: Cross multiply
    13,382.40x = 20,030.40 × 10,444.80
  4. Step 4: Simplify right side
    13,382.40x = 209,213,521.92
  5. Step 5: Solve for x
    x = 209,213,521.92/13,382.40
  6. Step 6: Final answer
    x = 15,633.48

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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.