Home / 12,881.32-19,312.53-4,111.18

Finding the Fourth Proportional to 12,881.32, 19,312.53 and 4,111.18

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Solution

The fourth proportional to 12,881.32, 19,312.53 and 4,111.18 is: 6,163.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,881.32 : 19,312.53 = 4,111.18 : x
  2. Step 2: Convert to fraction form
    12,881.32/19,312.53 = 4,111.18/x
  3. Step 3: Cross multiply
    12,881.32x = 19,312.53 × 4,111.18
  4. Step 4: Simplify right side
    12,881.32x = 79,397,287.09
  5. Step 5: Solve for x
    x = 79,397,287.09/12,881.32
  6. Step 6: Final answer
    x = 6,163.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.