Home / 18,461.39-27,688.03-5,310.90

Finding the Fourth Proportional to 18,461.39, 27,688.03 and 5,310.90

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Solution

The fourth proportional to 18,461.39, 27,688.03 and 5,310.90 is: 7,965.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.39 : 27,688.03 = 5,310.90 : x
  2. Step 2: Convert to fraction form
    18,461.39/27,688.03 = 5,310.90/x
  3. Step 3: Cross multiply
    18,461.39x = 27,688.03 × 5,310.90
  4. Step 4: Simplify right side
    18,461.39x = 147,048,345.25
  5. Step 5: Solve for x
    x = 147,048,345.25/18,461.39
  6. Step 6: Final answer
    x = 7,965.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.