Home / 12,369.64-17,070.34-6,780.36

Finding the Fourth Proportional to 12,369.64, 17,070.34 and 6,780.36

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Solution

The fourth proportional to 12,369.64, 17,070.34 and 6,780.36 is: 9,357.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,369.64 : 17,070.34 = 6,780.36 : x
  2. Step 2: Convert to fraction form
    12,369.64/17,070.34 = 6,780.36/x
  3. Step 3: Cross multiply
    12,369.64x = 17,070.34 × 6,780.36
  4. Step 4: Simplify right side
    12,369.64x = 115,743,050.52
  5. Step 5: Solve for x
    x = 115,743,050.52/12,369.64
  6. Step 6: Final answer
    x = 9,357.03

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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.