Home / 15,742.54-21,711.79-11,488.82

Finding the Fourth Proportional to 15,742.54, 21,711.79 and 11,488.82

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Solution

The fourth proportional to 15,742.54, 21,711.79 and 11,488.82 is: 15,845.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,742.54 : 21,711.79 = 11,488.82 : x
  2. Step 2: Convert to fraction form
    15,742.54/21,711.79 = 11,488.82/x
  3. Step 3: Cross multiply
    15,742.54x = 21,711.79 × 11,488.82
  4. Step 4: Simplify right side
    15,742.54x = 249,442,847.19
  5. Step 5: Solve for x
    x = 249,442,847.19/15,742.54
  6. Step 6: Final answer
    x = 15,845.15

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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.