Home / 26,027.20-39,040.80-12,905.20

Finding the Fourth Proportional to 26,027.20, 39,040.80 and 12,905.20

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Solution

The fourth proportional to 26,027.20, 39,040.80 and 12,905.20 is: 19,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,027.20 : 39,040.80 = 12,905.20 : x
  2. Step 2: Convert to fraction form
    26,027.20/39,040.80 = 12,905.20/x
  3. Step 3: Cross multiply
    26,027.20x = 39,040.80 × 12,905.20
  4. Step 4: Simplify right side
    26,027.20x = 503,829,332.16
  5. Step 5: Solve for x
    x = 503,829,332.16/26,027.20
  6. Step 6: Final answer
    x = 19,357.80

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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.