Home / 30,330.28-45,495.10-7,840.84

Finding the Fourth Proportional to 30,330.28, 45,495.10 and 7,840.84

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Solution

The fourth proportional to 30,330.28, 45,495.10 and 7,840.84 is: 11,761.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,330.28 : 45,495.10 = 7,840.84 : x
  2. Step 2: Convert to fraction form
    30,330.28/45,495.10 = 7,840.84/x
  3. Step 3: Cross multiply
    30,330.28x = 45,495.10 × 7,840.84
  4. Step 4: Simplify right side
    30,330.28x = 356,719,799.88
  5. Step 5: Solve for x
    x = 356,719,799.88/30,330.28
  6. Step 6: Final answer
    x = 11,761.18

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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.