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Finding the Fourth Proportional to 12,969.16, 17,897.46 and 7,666.60

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Solution

The fourth proportional to 12,969.16, 17,897.46 and 7,666.60 is: 10,579.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,969.16 : 17,897.46 = 7,666.60 : x
  2. Step 2: Convert to fraction form
    12,969.16/17,897.46 = 7,666.60/x
  3. Step 3: Cross multiply
    12,969.16x = 17,897.46 × 7,666.60
  4. Step 4: Simplify right side
    12,969.16x = 137,212,666.84
  5. Step 5: Solve for x
    x = 137,212,666.84/12,969.16
  6. Step 6: Final answer
    x = 10,579.92

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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.