Home / 12,421.25-17,141.64-6,756.32

Finding the Fourth Proportional to 12,421.25, 17,141.64 and 6,756.32

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Solution

The fourth proportional to 12,421.25, 17,141.64 and 6,756.32 is: 9,323.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.25 : 17,141.64 = 6,756.32 : x
  2. Step 2: Convert to fraction form
    12,421.25/17,141.64 = 6,756.32/x
  3. Step 3: Cross multiply
    12,421.25x = 17,141.64 × 6,756.32
  4. Step 4: Simplify right side
    12,421.25x = 115,814,294.12
  5. Step 5: Solve for x
    x = 115,814,294.12/12,421.25
  6. Step 6: Final answer
    x = 9,323.89

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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.