Home / 12,778.13-19,170.45-4,880.63

Finding the Fourth Proportional to 12,778.13, 19,170.45 and 4,880.63

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Solution

The fourth proportional to 12,778.13, 19,170.45 and 4,880.63 is: 7,322.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.13 : 19,170.45 = 4,880.63 : x
  2. Step 2: Convert to fraction form
    12,778.13/19,170.45 = 4,880.63/x
  3. Step 3: Cross multiply
    12,778.13x = 19,170.45 × 4,880.63
  4. Step 4: Simplify right side
    12,778.13x = 93,563,873.38
  5. Step 5: Solve for x
    x = 93,563,873.38/12,778.13
  6. Step 6: Final answer
    x = 7,322.19

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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.