Home / 12,666.12-17,485.38-8,897.28

Finding the Fourth Proportional to 12,666.12, 17,485.38 and 8,897.28

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Solution

The fourth proportional to 12,666.12, 17,485.38 and 8,897.28 is: 12,282.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.12 : 17,485.38 = 8,897.28 : x
  2. Step 2: Convert to fraction form
    12,666.12/17,485.38 = 8,897.28/x
  3. Step 3: Cross multiply
    12,666.12x = 17,485.38 × 8,897.28
  4. Step 4: Simplify right side
    12,666.12x = 155,572,321.77
  5. Step 5: Solve for x
    x = 155,572,321.77/12,666.12
  6. Step 6: Final answer
    x = 12,282.56

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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.