Home / 12,699.06-17,512.65-9,715.02

Finding the Fourth Proportional to 12,699.06, 17,512.65 and 9,715.02

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Solution

The fourth proportional to 12,699.06, 17,512.65 and 9,715.02 is: 13,397.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,699.06 : 17,512.65 = 9,715.02 : x
  2. Step 2: Convert to fraction form
    12,699.06/17,512.65 = 9,715.02/x
  3. Step 3: Cross multiply
    12,699.06x = 17,512.65 × 9,715.02
  4. Step 4: Simplify right side
    12,699.06x = 170,135,745.00
  5. Step 5: Solve for x
    x = 170,135,745.00/12,699.06
  6. Step 6: Final answer
    x = 13,397.51

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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.