Home / 13,681.06-20,529.78-4,916.65

Finding the Fourth Proportional to 13,681.06, 20,529.78 and 4,916.65

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Solution

The fourth proportional to 13,681.06, 20,529.78 and 4,916.65 is: 7,377.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.06 : 20,529.78 = 4,916.65 : x
  2. Step 2: Convert to fraction form
    13,681.06/20,529.78 = 4,916.65/x
  3. Step 3: Cross multiply
    13,681.06x = 20,529.78 × 4,916.65
  4. Step 4: Simplify right side
    13,681.06x = 100,937,742.84
  5. Step 5: Solve for x
    x = 100,937,742.84/13,681.06
  6. Step 6: Final answer
    x = 7,377.92

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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.