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Finding the Fourth Proportional to 32,990.40, 49,501.80 and 13,269.60

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Solution

The fourth proportional to 32,990.40, 49,501.80 and 13,269.60 is: 19,910.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,990.40 : 49,501.80 = 13,269.60 : x
  2. Step 2: Convert to fraction form
    32,990.40/49,501.80 = 13,269.60/x
  3. Step 3: Cross multiply
    32,990.40x = 49,501.80 × 13,269.60
  4. Step 4: Simplify right side
    32,990.40x = 656,869,085.28
  5. Step 5: Solve for x
    x = 656,869,085.28/32,990.40
  6. Step 6: Final answer
    x = 19,910.92

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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.