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Finding the Fourth Proportional to 11,365.80, 15,675.98 and 7,388.30

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Solution

The fourth proportional to 11,365.80, 15,675.98 and 7,388.30 is: 10,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,365.80 : 15,675.98 = 7,388.30 : x
  2. Step 2: Convert to fraction form
    11,365.80/15,675.98 = 7,388.30/x
  3. Step 3: Cross multiply
    11,365.80x = 15,675.98 × 7,388.30
  4. Step 4: Simplify right side
    11,365.80x = 115,818,727.71
  5. Step 5: Solve for x
    x = 115,818,727.71/11,365.80
  6. Step 6: Final answer
    x = 10,190.11

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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.