Home / 38,715.72-53,424.46-21,717.60

Finding the Fourth Proportional to 38,715.72, 53,424.46 and 21,717.60

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Solution

The fourth proportional to 38,715.72, 53,424.46 and 21,717.60 is: 29,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,715.72 : 53,424.46 = 21,717.60 : x
  2. Step 2: Convert to fraction form
    38,715.72/53,424.46 = 21,717.60/x
  3. Step 3: Cross multiply
    38,715.72x = 53,424.46 × 21,717.60
  4. Step 4: Simplify right side
    38,715.72x = 1,160,251,052.50
  5. Step 5: Solve for x
    x = 1,160,251,052.50/38,715.72
  6. Step 6: Final answer
    x = 29,968.47

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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.