Home / 13,328.16-19,988.75-3,965.66

Finding the Fourth Proportional to 13,328.16, 19,988.75 and 3,965.66

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Solution

The fourth proportional to 13,328.16, 19,988.75 and 3,965.66 is: 5,947.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.16 : 19,988.75 = 3,965.66 : x
  2. Step 2: Convert to fraction form
    13,328.16/19,988.75 = 3,965.66/x
  3. Step 3: Cross multiply
    13,328.16x = 19,988.75 × 3,965.66
  4. Step 4: Simplify right side
    13,328.16x = 79,268,586.33
  5. Step 5: Solve for x
    x = 79,268,586.33/13,328.16
  6. Step 6: Final answer
    x = 5,947.45

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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.