Home / 13,328.16-19,991.52-3,968.28

Finding the Fourth Proportional to 13,328.16, 19,991.52 and 3,968.28

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Solution

The fourth proportional to 13,328.16, 19,991.52 and 3,968.28 is: 5,952.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.16 : 19,991.52 = 3,968.28 : x
  2. Step 2: Convert to fraction form
    13,328.16/19,991.52 = 3,968.28/x
  3. Step 3: Cross multiply
    13,328.16x = 19,991.52 × 3,968.28
  4. Step 4: Simplify right side
    13,328.16x = 79,331,948.99
  5. Step 5: Solve for x
    x = 79,331,948.99/13,328.16
  6. Step 6: Final answer
    x = 5,952.21

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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.