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Finding the Fourth Proportional to 38,751.71, 58,073.42 and 20,943.98

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Solution

The fourth proportional to 38,751.71, 58,073.42 and 20,943.98 is: 31,386.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,751.71 : 58,073.42 = 20,943.98 : x
  2. Step 2: Convert to fraction form
    38,751.71/58,073.42 = 20,943.98/x
  3. Step 3: Cross multiply
    38,751.71x = 58,073.42 × 20,943.98
  4. Step 4: Simplify right side
    38,751.71x = 1,216,288,547.01
  5. Step 5: Solve for x
    x = 1,216,288,547.01/38,751.71
  6. Step 6: Final answer
    x = 31,386.71

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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.