Home / 18,455.81-27,688.19-5,308.08

Finding the Fourth Proportional to 18,455.81, 27,688.19 and 5,308.08

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Solution

The fourth proportional to 18,455.81, 27,688.19 and 5,308.08 is: 7,963.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.81 : 27,688.19 = 5,308.08 : x
  2. Step 2: Convert to fraction form
    18,455.81/27,688.19 = 5,308.08/x
  3. Step 3: Cross multiply
    18,455.81x = 27,688.19 × 5,308.08
  4. Step 4: Simplify right side
    18,455.81x = 146,971,101.03
  5. Step 5: Solve for x
    x = 146,971,101.03/18,455.81
  6. Step 6: Final answer
    x = 7,963.41

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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.