Home / 12,888.32-19,333.68-4,121.16

Finding the Fourth Proportional to 12,888.32, 19,333.68 and 4,121.16

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Solution

The fourth proportional to 12,888.32, 19,333.68 and 4,121.16 is: 6,182.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.32 : 19,333.68 = 4,121.16 : x
  2. Step 2: Convert to fraction form
    12,888.32/19,333.68 = 4,121.16/x
  3. Step 3: Cross multiply
    12,888.32x = 19,333.68 × 4,121.16
  4. Step 4: Simplify right side
    12,888.32x = 79,677,188.67
  5. Step 5: Solve for x
    x = 79,677,188.67/12,888.32
  6. Step 6: Final answer
    x = 6,182.12

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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.