Home / 51,515.08-77,278.70-18,228.20

Finding the Fourth Proportional to 51,515.08, 77,278.70 and 18,228.20

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Solution

The fourth proportional to 51,515.08, 77,278.70 and 18,228.20 is: 27,344.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,515.08 : 77,278.70 = 18,228.20 : x
  2. Step 2: Convert to fraction form
    51,515.08/77,278.70 = 18,228.20/x
  3. Step 3: Cross multiply
    51,515.08x = 77,278.70 × 18,228.20
  4. Step 4: Simplify right side
    51,515.08x = 1,408,651,599.34
  5. Step 5: Solve for x
    x = 1,408,651,599.34/51,515.08
  6. Step 6: Final answer
    x = 27,344.45

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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.