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Finding the Fourth Proportional to 32,646.97, 45,074.80 and 20,400.97

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Solution

The fourth proportional to 32,646.97, 45,074.80 and 20,400.97 is: 28,167.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,646.97 : 45,074.80 = 20,400.97 : x
  2. Step 2: Convert to fraction form
    32,646.97/45,074.80 = 20,400.97/x
  3. Step 3: Cross multiply
    32,646.97x = 45,074.80 × 20,400.97
  4. Step 4: Simplify right side
    32,646.97x = 919,569,417.18
  5. Step 5: Solve for x
    x = 919,569,417.18/32,646.97
  6. Step 6: Final answer
    x = 28,167.07

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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.