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Finding the Fourth Proportional to 13,008.80, 19,480.80 and 10,416.80

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Solution

The fourth proportional to 13,008.80, 19,480.80 and 10,416.80 is: 15,599.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,008.80 : 19,480.80 = 10,416.80 : x
  2. Step 2: Convert to fraction form
    13,008.80/19,480.80 = 10,416.80/x
  3. Step 3: Cross multiply
    13,008.80x = 19,480.80 × 10,416.80
  4. Step 4: Simplify right side
    13,008.80x = 202,927,597.44
  5. Step 5: Solve for x
    x = 202,927,597.44/13,008.80
  6. Step 6: Final answer
    x = 15,599.26

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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.