Home / 38,989.76-53,805.76-21,084.64

Finding the Fourth Proportional to 38,989.76, 53,805.76 and 21,084.64

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Solution

The fourth proportional to 38,989.76, 53,805.76 and 21,084.64 is: 29,096.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,989.76 : 53,805.76 = 21,084.64 : x
  2. Step 2: Convert to fraction form
    38,989.76/53,805.76 = 21,084.64/x
  3. Step 3: Cross multiply
    38,989.76x = 53,805.76 × 21,084.64
  4. Step 4: Simplify right side
    38,989.76x = 1,134,475,079.53
  5. Step 5: Solve for x
    x = 1,134,475,079.53/38,989.76
  6. Step 6: Final answer
    x = 29,096.74

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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.