Home / 12,887.18-19,330.59-3,653.18

Finding the Fourth Proportional to 12,887.18, 19,330.59 and 3,653.18

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Solution

The fourth proportional to 12,887.18, 19,330.59 and 3,653.18 is: 5,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.18 : 19,330.59 = 3,653.18 : x
  2. Step 2: Convert to fraction form
    12,887.18/19,330.59 = 3,653.18/x
  3. Step 3: Cross multiply
    12,887.18x = 19,330.59 × 3,653.18
  4. Step 4: Simplify right side
    12,887.18x = 70,618,124.78
  5. Step 5: Solve for x
    x = 70,618,124.78/12,887.18
  6. Step 6: Final answer
    x = 5,479.72

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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.