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Finding the Fourth Proportional to 13,053.90, 18,014.65 and 7,388.64

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Solution

The fourth proportional to 13,053.90, 18,014.65 and 7,388.64 is: 10,196.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.90 : 18,014.65 = 7,388.64 : x
  2. Step 2: Convert to fraction form
    13,053.90/18,014.65 = 7,388.64/x
  3. Step 3: Cross multiply
    13,053.90x = 18,014.65 × 7,388.64
  4. Step 4: Simplify right side
    13,053.90x = 133,103,763.58
  5. Step 5: Solve for x
    x = 133,103,763.58/13,053.90
  6. Step 6: Final answer
    x = 10,196.47

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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.