Home / 38,979.90-58,370.22-21,430.44

Finding the Fourth Proportional to 38,979.90, 58,370.22 and 21,430.44

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Solution

The fourth proportional to 38,979.90, 58,370.22 and 21,430.44 is: 32,090.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,979.90 : 58,370.22 = 21,430.44 : x
  2. Step 2: Convert to fraction form
    38,979.90/58,370.22 = 21,430.44/x
  3. Step 3: Cross multiply
    38,979.90x = 58,370.22 × 21,430.44
  4. Step 4: Simplify right side
    38,979.90x = 1,250,899,497.50
  5. Step 5: Solve for x
    x = 1,250,899,497.50/38,979.90
  6. Step 6: Final answer
    x = 32,090.89

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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.