Home / 38,899.50-53,678.12-21,898.31

Finding the Fourth Proportional to 38,899.50, 53,678.12 and 21,898.31

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Solution

The fourth proportional to 38,899.50, 53,678.12 and 21,898.31 is: 30,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,899.50 : 53,678.12 = 21,898.31 : x
  2. Step 2: Convert to fraction form
    38,899.50/53,678.12 = 21,898.31/x
  3. Step 3: Cross multiply
    38,899.50x = 53,678.12 × 21,898.31
  4. Step 4: Simplify right side
    38,899.50x = 1,175,460,136.68
  5. Step 5: Solve for x
    x = 1,175,460,136.68/38,899.50
  6. Step 6: Final answer
    x = 30,217.87

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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.