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Finding the Fourth Proportional to 30,339.81, 45,530.22 and 10,618.54

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Solution

The fourth proportional to 30,339.81, 45,530.22 and 10,618.54 is: 15,934.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,339.81 : 45,530.22 = 10,618.54 : x
  2. Step 2: Convert to fraction form
    30,339.81/45,530.22 = 10,618.54/x
  3. Step 3: Cross multiply
    30,339.81x = 45,530.22 × 10,618.54
  4. Step 4: Simplify right side
    30,339.81x = 483,464,462.28
  5. Step 5: Solve for x
    x = 483,464,462.28/30,339.81
  6. Step 6: Final answer
    x = 15,934.99

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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.