Home / 20,647.96-28,491.77-12,148.22

Finding the Fourth Proportional to 20,647.96, 28,491.77 and 12,148.22

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Solution

The fourth proportional to 20,647.96, 28,491.77 and 12,148.22 is: 16,763.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,647.96 : 28,491.77 = 12,148.22 : x
  2. Step 2: Convert to fraction form
    20,647.96/28,491.77 = 12,148.22/x
  3. Step 3: Cross multiply
    20,647.96x = 28,491.77 × 12,148.22
  4. Step 4: Simplify right side
    20,647.96x = 346,124,155.28
  5. Step 5: Solve for x
    x = 346,124,155.28/20,647.96
  6. Step 6: Final answer
    x = 16,763.11

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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.