Home / 13,257.69-18,295.20-7,288.80

Finding the Fourth Proportional to 13,257.69, 18,295.20 and 7,288.80

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Solution

The fourth proportional to 13,257.69, 18,295.20 and 7,288.80 is: 10,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.69 : 18,295.20 = 7,288.80 : x
  2. Step 2: Convert to fraction form
    13,257.69/18,295.20 = 7,288.80/x
  3. Step 3: Cross multiply
    13,257.69x = 18,295.20 × 7,288.80
  4. Step 4: Simplify right side
    13,257.69x = 133,350,053.76
  5. Step 5: Solve for x
    x = 133,350,053.76/13,257.69
  6. Step 6: Final answer
    x = 10,058.32

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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.