Home / 18,938.24-28,398.63-5,606.47

Finding the Fourth Proportional to 18,938.24, 28,398.63 and 5,606.47

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Solution

The fourth proportional to 18,938.24, 28,398.63 and 5,606.47 is: 8,407.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,938.24 : 28,398.63 = 5,606.47 : x
  2. Step 2: Convert to fraction form
    18,938.24/28,398.63 = 5,606.47/x
  3. Step 3: Cross multiply
    18,938.24x = 28,398.63 × 5,606.47
  4. Step 4: Simplify right side
    18,938.24x = 159,216,067.14
  5. Step 5: Solve for x
    x = 159,216,067.14/18,938.24
  6. Step 6: Final answer
    x = 8,407.12

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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.