Home / 28,359.87-42,538.25-8,636.77

Finding the Fourth Proportional to 28,359.87, 42,538.25 and 8,636.77

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Solution

The fourth proportional to 28,359.87, 42,538.25 and 8,636.77 is: 12,954.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,359.87 : 42,538.25 = 8,636.77 : x
  2. Step 2: Convert to fraction form
    28,359.87/42,538.25 = 8,636.77/x
  3. Step 3: Cross multiply
    28,359.87x = 42,538.25 × 8,636.77
  4. Step 4: Simplify right side
    28,359.87x = 367,393,038.27
  5. Step 5: Solve for x
    x = 367,393,038.27/28,359.87
  6. Step 6: Final answer
    x = 12,954.68

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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.