Home / 20,977.26-28,948.69-12,025.30

Finding the Fourth Proportional to 20,977.26, 28,948.69 and 12,025.30

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Solution

The fourth proportional to 20,977.26, 28,948.69 and 12,025.30 is: 16,594.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.26 : 28,948.69 = 12,025.30 : x
  2. Step 2: Convert to fraction form
    20,977.26/28,948.69 = 12,025.30/x
  3. Step 3: Cross multiply
    20,977.26x = 28,948.69 × 12,025.30
  4. Step 4: Simplify right side
    20,977.26x = 348,116,681.86
  5. Step 5: Solve for x
    x = 348,116,681.86/20,977.26
  6. Step 6: Final answer
    x = 16,594.95

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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.