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Finding the Fourth Proportional to 15,010.71, 20,716.52 and 12,488.37

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Solution

The fourth proportional to 15,010.71, 20,716.52 and 12,488.37 is: 17,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,010.71 : 20,716.52 = 12,488.37 : x
  2. Step 2: Convert to fraction form
    15,010.71/20,716.52 = 12,488.37/x
  3. Step 3: Cross multiply
    15,010.71x = 20,716.52 × 12,488.37
  4. Step 4: Simplify right side
    15,010.71x = 258,715,566.87
  5. Step 5: Solve for x
    x = 258,715,566.87/15,010.71
  6. Step 6: Final answer
    x = 17,235.40

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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.