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Finding the Fourth Proportional to 32,866.48, 45,388.88 and 20,935.20

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Solution

The fourth proportional to 32,866.48, 45,388.88 and 20,935.20 is: 28,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,866.48 : 45,388.88 = 20,935.20 : x
  2. Step 2: Convert to fraction form
    32,866.48/45,388.88 = 20,935.20/x
  3. Step 3: Cross multiply
    32,866.48x = 45,388.88 × 20,935.20
  4. Step 4: Simplify right side
    32,866.48x = 950,225,280.58
  5. Step 5: Solve for x
    x = 950,225,280.58/32,866.48
  6. Step 6: Final answer
    x = 28,911.68

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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.