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Finding the Fourth Proportional to 32,721.70, 49,102.80 and 12,998.20

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Solution

The fourth proportional to 32,721.70, 49,102.80 and 12,998.20 is: 19,505.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,721.70 : 49,102.80 = 12,998.20 : x
  2. Step 2: Convert to fraction form
    32,721.70/49,102.80 = 12,998.20/x
  3. Step 3: Cross multiply
    32,721.70x = 49,102.80 × 12,998.20
  4. Step 4: Simplify right side
    32,721.70x = 638,248,014.96
  5. Step 5: Solve for x
    x = 638,248,014.96/32,721.70
  6. Step 6: Final answer
    x = 19,505.34

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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.