Home / 15,185.80-22,778.70-8,187.40

Finding the Fourth Proportional to 15,185.80, 22,778.70 and 8,187.40

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Solution

The fourth proportional to 15,185.80, 22,778.70 and 8,187.40 is: 12,281.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.80 : 22,778.70 = 8,187.40 : x
  2. Step 2: Convert to fraction form
    15,185.80/22,778.70 = 8,187.40/x
  3. Step 3: Cross multiply
    15,185.80x = 22,778.70 × 8,187.40
  4. Step 4: Simplify right side
    15,185.80x = 186,498,328.38
  5. Step 5: Solve for x
    x = 186,498,328.38/15,185.80
  6. Step 6: Final answer
    x = 12,281.10

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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.