Home / 12,826.77-19,214.55-8,430.90

Finding the Fourth Proportional to 12,826.77, 19,214.55 and 8,430.90

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Solution

The fourth proportional to 12,826.77, 19,214.55 and 8,430.90 is: 12,629.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,826.77 : 19,214.55 = 8,430.90 : x
  2. Step 2: Convert to fraction form
    12,826.77/19,214.55 = 8,430.90/x
  3. Step 3: Cross multiply
    12,826.77x = 19,214.55 × 8,430.90
  4. Step 4: Simplify right side
    12,826.77x = 161,995,949.60
  5. Step 5: Solve for x
    x = 161,995,949.60/12,826.77
  6. Step 6: Final answer
    x = 12,629.52

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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.