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Finding the Fourth Proportional to 13,016.80, 19,492.80 and 10,424.80

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Solution

The fourth proportional to 13,016.80, 19,492.80 and 10,424.80 is: 15,611.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,016.80 : 19,492.80 = 10,424.80 : x
  2. Step 2: Convert to fraction form
    13,016.80/19,492.80 = 10,424.80/x
  3. Step 3: Cross multiply
    13,016.80x = 19,492.80 × 10,424.80
  4. Step 4: Simplify right side
    13,016.80x = 203,208,541.44
  5. Step 5: Solve for x
    x = 203,208,541.44/13,016.80
  6. Step 6: Final answer
    x = 15,611.25

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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.