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Finding the Fourth Proportional to 38,602.86, 57,912.80 and 21,970.73

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Solution

The fourth proportional to 38,602.86, 57,912.80 and 21,970.73 is: 32,960.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,602.86 : 57,912.80 = 21,970.73 : x
  2. Step 2: Convert to fraction form
    38,602.86/57,912.80 = 21,970.73/x
  3. Step 3: Cross multiply
    38,602.86x = 57,912.80 × 21,970.73
  4. Step 4: Simplify right side
    38,602.86x = 1,272,386,492.34
  5. Step 5: Solve for x
    x = 1,272,386,492.34/38,602.86
  6. Step 6: Final answer
    x = 32,960.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.