Home / 12,685.10-19,027.77-5,665.46

Finding the Fourth Proportional to 12,685.10, 19,027.77 and 5,665.46

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Solution

The fourth proportional to 12,685.10, 19,027.77 and 5,665.46 is: 8,498.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685.10 : 19,027.77 = 5,665.46 : x
  2. Step 2: Convert to fraction form
    12,685.10/19,027.77 = 5,665.46/x
  3. Step 3: Cross multiply
    12,685.10x = 19,027.77 × 5,665.46
  4. Step 4: Simplify right side
    12,685.10x = 107,801,117.39
  5. Step 5: Solve for x
    x = 107,801,117.39/12,685.10
  6. Step 6: Final answer
    x = 8,498.25

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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.