Home / 13,781.79-20,672.69-5,016.78

Finding the Fourth Proportional to 13,781.79, 20,672.69 and 5,016.78

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Solution

The fourth proportional to 13,781.79, 20,672.69 and 5,016.78 is: 7,525.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.79 : 20,672.69 = 5,016.78 : x
  2. Step 2: Convert to fraction form
    13,781.79/20,672.69 = 5,016.78/x
  3. Step 3: Cross multiply
    13,781.79x = 20,672.69 × 5,016.78
  4. Step 4: Simplify right side
    13,781.79x = 103,710,312.65
  5. Step 5: Solve for x
    x = 103,710,312.65/13,781.79
  6. Step 6: Final answer
    x = 7,525.17

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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.