Home / 13,257.88-18,293.34-7,950.76

Finding the Fourth Proportional to 13,257.88, 18,293.34 and 7,950.76

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Solution

The fourth proportional to 13,257.88, 18,293.34 and 7,950.76 is: 10,970.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.88 : 18,293.34 = 7,950.76 : x
  2. Step 2: Convert to fraction form
    13,257.88/18,293.34 = 7,950.76/x
  3. Step 3: Cross multiply
    13,257.88x = 18,293.34 × 7,950.76
  4. Step 4: Simplify right side
    13,257.88x = 145,445,940.02
  5. Step 5: Solve for x
    x = 145,445,940.02/13,257.88
  6. Step 6: Final answer
    x = 10,970.53

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Half scale
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Double scale
Find fourth proportional to 13,258.88, 18,294.72 and 7,951.76
Similar ratio
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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.