Home / 13,140.28-19,695.66-8,646.04

Finding the Fourth Proportional to 13,140.28, 19,695.66 and 8,646.04

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Solution

The fourth proportional to 13,140.28, 19,695.66 and 8,646.04 is: 12,959.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.28 : 19,695.66 = 8,646.04 : x
  2. Step 2: Convert to fraction form
    13,140.28/19,695.66 = 8,646.04/x
  3. Step 3: Cross multiply
    13,140.28x = 19,695.66 × 8,646.04
  4. Step 4: Simplify right side
    13,140.28x = 170,289,464.19
  5. Step 5: Solve for x
    x = 170,289,464.19/13,140.28
  6. Step 6: Final answer
    x = 12,959.35

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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.