Home / 12,161.39-16,774.01-7,904.51

Finding the Fourth Proportional to 12,161.39, 16,774.01 and 7,904.51

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Solution

The fourth proportional to 12,161.39, 16,774.01 and 7,904.51 is: 10,902.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.39 : 16,774.01 = 7,904.51 : x
  2. Step 2: Convert to fraction form
    12,161.39/16,774.01 = 7,904.51/x
  3. Step 3: Cross multiply
    12,161.39x = 16,774.01 × 7,904.51
  4. Step 4: Simplify right side
    12,161.39x = 132,590,368.35
  5. Step 5: Solve for x
    x = 132,590,368.35/12,161.39
  6. Step 6: Final answer
    x = 10,902.57

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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.