Home / 51,515.12-77,278.80-18,228.32

Finding the Fourth Proportional to 51,515.12, 77,278.80 and 18,228.32

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Solution

The fourth proportional to 51,515.12, 77,278.80 and 18,228.32 is: 27,344.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,515.12 : 77,278.80 = 18,228.32 : x
  2. Step 2: Convert to fraction form
    51,515.12/77,278.80 = 18,228.32/x
  3. Step 3: Cross multiply
    51,515.12x = 77,278.80 × 18,228.32
  4. Step 4: Simplify right side
    51,515.12x = 1,408,662,695.62
  5. Step 5: Solve for x
    x = 1,408,662,695.62/51,515.12
  6. Step 6: Final answer
    x = 27,344.65

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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.