Home / 28,357.66-42,542.85-8,637.76

Finding the Fourth Proportional to 28,357.66, 42,542.85 and 8,637.76

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Solution

The fourth proportional to 28,357.66, 42,542.85 and 8,637.76 is: 12,958.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.66 : 42,542.85 = 8,637.76 : x
  2. Step 2: Convert to fraction form
    28,357.66/42,542.85 = 8,637.76/x
  3. Step 3: Cross multiply
    28,357.66x = 42,542.85 × 8,637.76
  4. Step 4: Simplify right side
    28,357.66x = 367,474,928.02
  5. Step 5: Solve for x
    x = 367,474,928.02/28,357.66
  6. Step 6: Final answer
    x = 12,958.58

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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.