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Finding the Fourth Proportional to 11,984.90, 16,528.39 and 7,509.13

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Solution

The fourth proportional to 11,984.90, 16,528.39 and 7,509.13 is: 10,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,984.90 : 16,528.39 = 7,509.13 : x
  2. Step 2: Convert to fraction form
    11,984.90/16,528.39 = 7,509.13/x
  3. Step 3: Cross multiply
    11,984.90x = 16,528.39 × 7,509.13
  4. Step 4: Simplify right side
    11,984.90x = 124,113,769.11
  5. Step 5: Solve for x
    x = 124,113,769.11/11,984.90
  6. Step 6: Final answer
    x = 10,355.85

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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.