Home / 12,739.19-17,588.61-9,749.66

Finding the Fourth Proportional to 12,739.19, 17,588.61 and 9,749.66

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Solution

The fourth proportional to 12,739.19, 17,588.61 and 9,749.66 is: 13,461.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.19 : 17,588.61 = 9,749.66 : x
  2. Step 2: Convert to fraction form
    12,739.19/17,588.61 = 9,749.66/x
  3. Step 3: Cross multiply
    12,739.19x = 17,588.61 × 9,749.66
  4. Step 4: Simplify right side
    12,739.19x = 171,482,879.43
  5. Step 5: Solve for x
    x = 171,482,879.43/12,739.19
  6. Step 6: Final answer
    x = 13,461.06

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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.