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Finding the Fourth Proportional to 32,757.47, 45,206.90 and 18,421.80

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Solution

The fourth proportional to 32,757.47, 45,206.90 and 18,421.80 is: 25,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,757.47 : 45,206.90 = 18,421.80 : x
  2. Step 2: Convert to fraction form
    32,757.47/45,206.90 = 18,421.80/x
  3. Step 3: Cross multiply
    32,757.47x = 45,206.90 × 18,421.80
  4. Step 4: Simplify right side
    32,757.47x = 832,792,378.31
  5. Step 5: Solve for x
    x = 832,792,378.31/32,757.47
  6. Step 6: Final answer
    x = 25,422.98

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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.