Home / 30,231.90-45,356.02-10,511.54

Finding the Fourth Proportional to 30,231.90, 45,356.02 and 10,511.54

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Solution

The fourth proportional to 30,231.90, 45,356.02 and 10,511.54 is: 15,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,231.90 : 45,356.02 = 10,511.54 : x
  2. Step 2: Convert to fraction form
    30,231.90/45,356.02 = 10,511.54/x
  3. Step 3: Cross multiply
    30,231.90x = 45,356.02 × 10,511.54
  4. Step 4: Simplify right side
    30,231.90x = 476,761,618.47
  5. Step 5: Solve for x
    x = 476,761,618.47/30,231.90
  6. Step 6: Final answer
    x = 15,770.15

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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.