Home / 13,209.24-18,225.90-7,617

Finding the Fourth Proportional to 13,209.24, 18,225.90 and 7,617

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Solution

The fourth proportional to 13,209.24, 18,225.90 and 7,617 is: 10,509.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209.24 : 18,225.90 = 7,617 : x
  2. Step 2: Convert to fraction form
    13,209.24/18,225.90 = 7,617/x
  3. Step 3: Cross multiply
    13,209.24x = 18,225.90 × 7,617
  4. Step 4: Simplify right side
    13,209.24x = 138,826,680.30
  5. Step 5: Solve for x
    x = 138,826,680.30/13,209.24
  6. Step 6: Final answer
    x = 10,509.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.