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Finding the Fourth Proportional to 11,859.80, 16,368.21 and 7,384.95

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Solution

The fourth proportional to 11,859.80, 16,368.21 and 7,384.95 is: 10,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,859.80 : 16,368.21 = 7,384.95 : x
  2. Step 2: Convert to fraction form
    11,859.80/16,368.21 = 7,384.95/x
  3. Step 3: Cross multiply
    11,859.80x = 16,368.21 × 7,384.95
  4. Step 4: Simplify right side
    11,859.80x = 120,878,412.44
  5. Step 5: Solve for x
    x = 120,878,412.44/11,859.80
  6. Step 6: Final answer
    x = 10,192.29

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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.