Home / 13,257.47-18,295.67-7,289.30

Finding the Fourth Proportional to 13,257.47, 18,295.67 and 7,289.30

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Solution

The fourth proportional to 13,257.47, 18,295.67 and 7,289.30 is: 10,059.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.47 : 18,295.67 = 7,289.30 : x
  2. Step 2: Convert to fraction form
    13,257.47/18,295.67 = 7,289.30/x
  3. Step 3: Cross multiply
    13,257.47x = 18,295.67 × 7,289.30
  4. Step 4: Simplify right side
    13,257.47x = 133,362,691.29
  5. Step 5: Solve for x
    x = 133,362,691.29/13,257.47
  6. Step 6: Final answer
    x = 10,059.44

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1.5x scale

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.