Home / 28,019.49-42,029.15-8,299.58

Finding the Fourth Proportional to 28,019.49, 42,029.15 and 8,299.58

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Solution

The fourth proportional to 28,019.49, 42,029.15 and 8,299.58 is: 12,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.49 : 42,029.15 = 8,299.58 : x
  2. Step 2: Convert to fraction form
    28,019.49/42,029.15 = 8,299.58/x
  3. Step 3: Cross multiply
    28,019.49x = 42,029.15 × 8,299.58
  4. Step 4: Simplify right side
    28,019.49x = 348,824,347.56
  5. Step 5: Solve for x
    x = 348,824,347.56/28,019.49
  6. Step 6: Final answer
    x = 12,449.35

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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.