Home / 38,690.91-58,052.77-21,140.24

Finding the Fourth Proportional to 38,690.91, 58,052.77 and 21,140.24

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Solution

The fourth proportional to 38,690.91, 58,052.77 and 21,140.24 is: 31,719.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.91 : 58,052.77 = 21,140.24 : x
  2. Step 2: Convert to fraction form
    38,690.91/58,052.77 = 21,140.24/x
  3. Step 3: Cross multiply
    38,690.91x = 58,052.77 × 21,140.24
  4. Step 4: Simplify right side
    38,690.91x = 1,227,249,200.20
  5. Step 5: Solve for x
    x = 1,227,249,200.20/38,690.91
  6. Step 6: Final answer
    x = 31,719.32

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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.