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Finding the Fourth Proportional to 11,509.80, 15,883.06 and 7,041.08

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Solution

The fourth proportional to 11,509.80, 15,883.06 and 7,041.08 is: 9,716.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,509.80 : 15,883.06 = 7,041.08 : x
  2. Step 2: Convert to fraction form
    11,509.80/15,883.06 = 7,041.08/x
  3. Step 3: Cross multiply
    11,509.80x = 15,883.06 × 7,041.08
  4. Step 4: Simplify right side
    11,509.80x = 111,833,896.10
  5. Step 5: Solve for x
    x = 111,833,896.10/11,509.80
  6. Step 6: Final answer
    x = 9,716.41

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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.