Home / 30,330.75-45,459.83-19,805.82

Finding the Fourth Proportional to 30,330.75, 45,459.83 and 19,805.82

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Solution

The fourth proportional to 30,330.75, 45,459.83 and 19,805.82 is: 29,685.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,330.75 : 45,459.83 = 19,805.82 : x
  2. Step 2: Convert to fraction form
    30,330.75/45,459.83 = 19,805.82/x
  3. Step 3: Cross multiply
    30,330.75x = 45,459.83 × 19,805.82
  4. Step 4: Simplify right side
    30,330.75x = 900,369,089.25
  5. Step 5: Solve for x
    x = 900,369,089.25/30,330.75
  6. Step 6: Final answer
    x = 29,685.02

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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.