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Finding the Fourth Proportional to 11,599.99, 17,385.40 and 8,319.49

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Solution

The fourth proportional to 11,599.99, 17,385.40 and 8,319.49 is: 12,468.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,599.99 : 17,385.40 = 8,319.49 : x
  2. Step 2: Convert to fraction form
    11,599.99/17,385.40 = 8,319.49/x
  3. Step 3: Cross multiply
    11,599.99x = 17,385.40 × 8,319.49
  4. Step 4: Simplify right side
    11,599.99x = 144,637,661.45
  5. Step 5: Solve for x
    x = 144,637,661.45/11,599.99
  6. Step 6: Final answer
    x = 12,468.77

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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.