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Finding the Fourth Proportional to 10,655.80, 15,991.86 and 7,529.08

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Solution

The fourth proportional to 10,655.80, 15,991.86 and 7,529.08 is: 11,299.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,655.80 : 15,991.86 = 7,529.08 : x
  2. Step 2: Convert to fraction form
    10,655.80/15,991.86 = 7,529.08/x
  3. Step 3: Cross multiply
    10,655.80x = 15,991.86 × 7,529.08
  4. Step 4: Simplify right side
    10,655.80x = 120,403,993.29
  5. Step 5: Solve for x
    x = 120,403,993.29/10,655.80
  6. Step 6: Final answer
    x = 11,299.39

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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.