Home / 13,316.18-18,376.17-7,347.72

Finding the Fourth Proportional to 13,316.18, 18,376.17 and 7,347.72

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Solution

The fourth proportional to 13,316.18, 18,376.17 and 7,347.72 is: 10,139.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.18 : 18,376.17 = 7,347.72 : x
  2. Step 2: Convert to fraction form
    13,316.18/18,376.17 = 7,347.72/x
  3. Step 3: Cross multiply
    13,316.18x = 18,376.17 × 7,347.72
  4. Step 4: Simplify right side
    13,316.18x = 135,022,855.37
  5. Step 5: Solve for x
    x = 135,022,855.37/13,316.18
  6. Step 6: Final answer
    x = 10,139.76

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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.