Home / 12,421.36-17,141.54-6,756.15

Finding the Fourth Proportional to 12,421.36, 17,141.54 and 6,756.15

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Solution

The fourth proportional to 12,421.36, 17,141.54 and 6,756.15 is: 9,323.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.36 : 17,141.54 = 6,756.15 : x
  2. Step 2: Convert to fraction form
    12,421.36/17,141.54 = 6,756.15/x
  3. Step 3: Cross multiply
    12,421.36x = 17,141.54 × 6,756.15
  4. Step 4: Simplify right side
    12,421.36x = 115,810,815.47
  5. Step 5: Solve for x
    x = 115,810,815.47/12,421.36
  6. Step 6: Final answer
    x = 9,323.52

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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.