Home / 11,531.79-15,880.35-10,018.65

Finding the Fourth Proportional to 11,531.79, 15,880.35 and 10,018.65

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Solution

The fourth proportional to 11,531.79, 15,880.35 and 10,018.65 is: 13,796.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,531.79 : 15,880.35 = 10,018.65 : x
  2. Step 2: Convert to fraction form
    11,531.79/15,880.35 = 10,018.65/x
  3. Step 3: Cross multiply
    11,531.79x = 15,880.35 × 10,018.65
  4. Step 4: Simplify right side
    11,531.79x = 159,099,668.53
  5. Step 5: Solve for x
    x = 159,099,668.53/11,531.79
  6. Step 6: Final answer
    x = 13,796.62

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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.