Home / 12,339.12-17,035.44-9,680.16

Finding the Fourth Proportional to 12,339.12, 17,035.44 and 9,680.16

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Solution

The fourth proportional to 12,339.12, 17,035.44 and 9,680.16 is: 13,364.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.12 : 17,035.44 = 9,680.16 : x
  2. Step 2: Convert to fraction form
    12,339.12/17,035.44 = 9,680.16/x
  3. Step 3: Cross multiply
    12,339.12x = 17,035.44 × 9,680.16
  4. Step 4: Simplify right side
    12,339.12x = 164,905,784.87
  5. Step 5: Solve for x
    x = 164,905,784.87/12,339.12
  6. Step 6: Final answer
    x = 13,364.47

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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.