Home / 38,678.92-53,376.87-21,683.30

Finding the Fourth Proportional to 38,678.92, 53,376.87 and 21,683.30

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Solution

The fourth proportional to 38,678.92, 53,376.87 and 21,683.30 is: 29,922.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,678.92 : 53,376.87 = 21,683.30 : x
  2. Step 2: Convert to fraction form
    38,678.92/53,376.87 = 21,683.30/x
  3. Step 3: Cross multiply
    38,678.92x = 53,376.87 × 21,683.30
  4. Step 4: Simplify right side
    38,678.92x = 1,157,386,499.70
  5. Step 5: Solve for x
    x = 1,157,386,499.70/38,678.92
  6. Step 6: Final answer
    x = 29,922.93

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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.