Home / 31,515.44-47,259.79-11,780.19

Finding the Fourth Proportional to 31,515.44, 47,259.79 and 11,780.19

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Solution

The fourth proportional to 31,515.44, 47,259.79 and 11,780.19 is: 17,665.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515.44 : 47,259.79 = 11,780.19 : x
  2. Step 2: Convert to fraction form
    31,515.44/47,259.79 = 11,780.19/x
  3. Step 3: Cross multiply
    31,515.44x = 47,259.79 × 11,780.19
  4. Step 4: Simplify right side
    31,515.44x = 556,729,276.11
  5. Step 5: Solve for x
    x = 556,729,276.11/31,515.44
  6. Step 6: Final answer
    x = 17,665.29

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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.