Home / 13,148.34-18,144.63-7,179.99

Finding the Fourth Proportional to 13,148.34, 18,144.63 and 7,179.99

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Solution

The fourth proportional to 13,148.34, 18,144.63 and 7,179.99 is: 9,908.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.34 : 18,144.63 = 7,179.99 : x
  2. Step 2: Convert to fraction form
    13,148.34/18,144.63 = 7,179.99/x
  3. Step 3: Cross multiply
    13,148.34x = 18,144.63 × 7,179.99
  4. Step 4: Simplify right side
    13,148.34x = 130,278,261.95
  5. Step 5: Solve for x
    x = 130,278,261.95/13,148.34
  6. Step 6: Final answer
    x = 9,908.34

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Double scale
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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.