Home / 13,274.46-19,899.81-5,478.30

Finding the Fourth Proportional to 13,274.46, 19,899.81 and 5,478.30

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Solution

The fourth proportional to 13,274.46, 19,899.81 and 5,478.30 is: 8,212.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,274.46 : 19,899.81 = 5,478.30 : x
  2. Step 2: Convert to fraction form
    13,274.46/19,899.81 = 5,478.30/x
  3. Step 3: Cross multiply
    13,274.46x = 19,899.81 × 5,478.30
  4. Step 4: Simplify right side
    13,274.46x = 109,017,129.12
  5. Step 5: Solve for x
    x = 109,017,129.12/13,274.46
  6. Step 6: Final answer
    x = 8,212.55

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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.