Home / 38,614.55-53,287.38-21,618.81

Finding the Fourth Proportional to 38,614.55, 53,287.38 and 21,618.81

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Solution

The fourth proportional to 38,614.55, 53,287.38 and 21,618.81 is: 29,833.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,614.55 : 53,287.38 = 21,618.81 : x
  2. Step 2: Convert to fraction form
    38,614.55/53,287.38 = 21,618.81/x
  3. Step 3: Cross multiply
    38,614.55x = 53,287.38 × 21,618.81
  4. Step 4: Simplify right side
    38,614.55x = 1,152,009,743.62
  5. Step 5: Solve for x
    x = 1,152,009,743.62/38,614.55
  6. Step 6: Final answer
    x = 29,833.57

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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.