Home / 30,021.20-45,032.71-10,299.47

Finding the Fourth Proportional to 30,021.20, 45,032.71 and 10,299.47

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Solution

The fourth proportional to 30,021.20, 45,032.71 and 10,299.47 is: 15,449.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,021.20 : 45,032.71 = 10,299.47 : x
  2. Step 2: Convert to fraction form
    30,021.20/45,032.71 = 10,299.47/x
  3. Step 3: Cross multiply
    30,021.20x = 45,032.71 × 10,299.47
  4. Step 4: Simplify right side
    30,021.20x = 463,813,045.66
  5. Step 5: Solve for x
    x = 463,813,045.66/30,021.20
  6. Step 6: Final answer
    x = 15,449.52

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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.