Home / 13,403.20-18,499.34-7,436.92

Finding the Fourth Proportional to 13,403.20, 18,499.34 and 7,436.92

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Solution

The fourth proportional to 13,403.20, 18,499.34 and 7,436.92 is: 10,264.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,403.20 : 18,499.34 = 7,436.92 : x
  2. Step 2: Convert to fraction form
    13,403.20/18,499.34 = 7,436.92/x
  3. Step 3: Cross multiply
    13,403.20x = 18,499.34 × 7,436.92
  4. Step 4: Simplify right side
    13,403.20x = 137,578,111.63
  5. Step 5: Solve for x
    x = 137,578,111.63/13,403.20
  6. Step 6: Final answer
    x = 10,264.57

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Half scale
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Double scale
Find fourth proportional to 13,404.20, 18,500.72 and 7,437.92
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.