Home / 12,950.80-19,416.60-5,549.20

Finding the Fourth Proportional to 12,950.80, 19,416.60 and 5,549.20

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Solution

The fourth proportional to 12,950.80, 19,416.60 and 5,549.20 is: 8,319.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,950.80 : 19,416.60 = 5,549.20 : x
  2. Step 2: Convert to fraction form
    12,950.80/19,416.60 = 5,549.20/x
  3. Step 3: Cross multiply
    12,950.80x = 19,416.60 × 5,549.20
  4. Step 4: Simplify right side
    12,950.80x = 107,746,596.72
  5. Step 5: Solve for x
    x = 107,746,596.72/12,950.80
  6. Step 6: Final answer
    x = 8,319.69

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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.