Home / 38,658.24-53,390.34-31,129.38

Finding the Fourth Proportional to 38,658.24, 53,390.34 and 31,129.38

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Solution

The fourth proportional to 38,658.24, 53,390.34 and 31,129.38 is: 42,992.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,658.24 : 53,390.34 = 31,129.38 : x
  2. Step 2: Convert to fraction form
    38,658.24/53,390.34 = 31,129.38/x
  3. Step 3: Cross multiply
    38,658.24x = 53,390.34 × 31,129.38
  4. Step 4: Simplify right side
    38,658.24x = 1,662,008,182.19
  5. Step 5: Solve for x
    x = 1,662,008,182.19/38,658.24
  6. Step 6: Final answer
    x = 42,992.34

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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.