Home / 28,240.15-42,346.54-8,515.03

Finding the Fourth Proportional to 28,240.15, 42,346.54 and 8,515.03

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Solution

The fourth proportional to 28,240.15, 42,346.54 and 8,515.03 is: 12,768.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.15 : 42,346.54 = 8,515.03 : x
  2. Step 2: Convert to fraction form
    28,240.15/42,346.54 = 8,515.03/x
  3. Step 3: Cross multiply
    28,240.15x = 42,346.54 × 8,515.03
  4. Step 4: Simplify right side
    28,240.15x = 360,582,058.50
  5. Step 5: Solve for x
    x = 360,582,058.50/28,240.15
  6. Step 6: Final answer
    x = 12,768.42

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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.