Home / 38,718.54-53,431.11-21,950.46

Finding the Fourth Proportional to 38,718.54, 53,431.11 and 21,950.46

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Solution

The fourth proportional to 38,718.54, 53,431.11 and 21,950.46 is: 30,291.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,718.54 : 53,431.11 = 21,950.46 : x
  2. Step 2: Convert to fraction form
    38,718.54/53,431.11 = 21,950.46/x
  3. Step 3: Cross multiply
    38,718.54x = 53,431.11 × 21,950.46
  4. Step 4: Simplify right side
    38,718.54x = 1,172,837,442.81
  5. Step 5: Solve for x
    x = 1,172,837,442.81/38,718.54
  6. Step 6: Final answer
    x = 30,291.37

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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.