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Finding the Fourth Proportional to 12,259.50, 16,918.11 and 6,670.50

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Solution

The fourth proportional to 12,259.50, 16,918.11 and 6,670.50 is: 9,205.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,259.50 : 16,918.11 = 6,670.50 : x
  2. Step 2: Convert to fraction form
    12,259.50/16,918.11 = 6,670.50/x
  3. Step 3: Cross multiply
    12,259.50x = 16,918.11 × 6,670.50
  4. Step 4: Simplify right side
    12,259.50x = 112,852,252.76
  5. Step 5: Solve for x
    x = 112,852,252.76/12,259.50
  6. Step 6: Final answer
    x = 9,205.29

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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.