Home / 38,143.48-52,639.29-21,146.71

Finding the Fourth Proportional to 38,143.48, 52,639.29 and 21,146.71

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Solution

The fourth proportional to 38,143.48, 52,639.29 and 21,146.71 is: 29,183.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,143.48 : 52,639.29 = 21,146.71 : x
  2. Step 2: Convert to fraction form
    38,143.48/52,639.29 = 21,146.71/x
  3. Step 3: Cross multiply
    38,143.48x = 52,639.29 × 21,146.71
  4. Step 4: Simplify right side
    38,143.48x = 1,113,147,800.24
  5. Step 5: Solve for x
    x = 1,113,147,800.24/38,143.48
  6. Step 6: Final answer
    x = 29,183.17

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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.