Home / 12,981.44-19,472.15-3,120.72

Finding the Fourth Proportional to 12,981.44, 19,472.15 and 3,120.72

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Solution

The fourth proportional to 12,981.44, 19,472.15 and 3,120.72 is: 4,681.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981.44 : 19,472.15 = 3,120.72 : x
  2. Step 2: Convert to fraction form
    12,981.44/19,472.15 = 3,120.72/x
  3. Step 3: Cross multiply
    12,981.44x = 19,472.15 × 3,120.72
  4. Step 4: Simplify right side
    12,981.44x = 60,767,066.63
  5. Step 5: Solve for x
    x = 60,767,066.63/12,981.44
  6. Step 6: Final answer
    x = 4,681.07

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Similar ratio
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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.