Home / 13,316.99-18,376.84-7,647.76

Finding the Fourth Proportional to 13,316.99, 18,376.84 and 7,647.76

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Solution

The fourth proportional to 13,316.99, 18,376.84 and 7,647.76 is: 10,553.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.99 : 18,376.84 = 7,647.76 : x
  2. Step 2: Convert to fraction form
    13,316.99/18,376.84 = 7,647.76/x
  3. Step 3: Cross multiply
    13,316.99x = 18,376.84 × 7,647.76
  4. Step 4: Simplify right side
    13,316.99x = 140,541,596.82
  5. Step 5: Solve for x
    x = 140,541,596.82/13,316.99
  6. Step 6: Final answer
    x = 10,553.55

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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.