Home / 32,890.58-45,403.80-20,969.90

Finding the Fourth Proportional to 32,890.58, 45,403.80 and 20,969.90

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Solution

The fourth proportional to 32,890.58, 45,403.80 and 20,969.90 is: 28,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,890.58 : 45,403.80 = 20,969.90 : x
  2. Step 2: Convert to fraction form
    32,890.58/45,403.80 = 20,969.90/x
  3. Step 3: Cross multiply
    32,890.58x = 45,403.80 × 20,969.90
  4. Step 4: Simplify right side
    32,890.58x = 952,113,145.62
  5. Step 5: Solve for x
    x = 952,113,145.62/32,890.58
  6. Step 6: Final answer
    x = 28,947.90

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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.