Home / 18,461.68-27,688.56-5,311.60

Finding the Fourth Proportional to 18,461.68, 27,688.56 and 5,311.60

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Solution

The fourth proportional to 18,461.68, 27,688.56 and 5,311.60 is: 7,966.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.68 : 27,688.56 = 5,311.60 : x
  2. Step 2: Convert to fraction form
    18,461.68/27,688.56 = 5,311.60/x
  3. Step 3: Cross multiply
    18,461.68x = 27,688.56 × 5,311.60
  4. Step 4: Simplify right side
    18,461.68x = 147,070,555.30
  5. Step 5: Solve for x
    x = 147,070,555.30/18,461.68
  6. Step 6: Final answer
    x = 7,966.26

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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.