Home / 30,337.98-45,515.16-9,278.76

Finding the Fourth Proportional to 30,337.98, 45,515.16 and 9,278.76

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Solution

The fourth proportional to 30,337.98, 45,515.16 and 9,278.76 is: 13,920.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,337.98 : 45,515.16 = 9,278.76 : x
  2. Step 2: Convert to fraction form
    30,337.98/45,515.16 = 9,278.76/x
  3. Step 3: Cross multiply
    30,337.98x = 45,515.16 × 9,278.76
  4. Step 4: Simplify right side
    30,337.98x = 422,324,018.43
  5. Step 5: Solve for x
    x = 422,324,018.43/30,337.98
  6. Step 6: Final answer
    x = 13,920.64

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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.