Home / 13,725.18-18,940.91-7,437.69

Finding the Fourth Proportional to 13,725.18, 18,940.91 and 7,437.69

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Solution

The fourth proportional to 13,725.18, 18,940.91 and 7,437.69 is: 10,264.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.18 : 18,940.91 = 7,437.69 : x
  2. Step 2: Convert to fraction form
    13,725.18/18,940.91 = 7,437.69/x
  3. Step 3: Cross multiply
    13,725.18x = 18,940.91 × 7,437.69
  4. Step 4: Simplify right side
    13,725.18x = 140,876,579.71
  5. Step 5: Solve for x
    x = 140,876,579.71/13,725.18
  6. Step 6: Final answer
    x = 10,264.10

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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.