Home / 31,856.06-47,789.86-13,125.68

Finding the Fourth Proportional to 31,856.06, 47,789.86 and 13,125.68

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Solution

The fourth proportional to 31,856.06, 47,789.86 and 13,125.68 is: 19,690.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,856.06 : 47,789.86 = 13,125.68 : x
  2. Step 2: Convert to fraction form
    31,856.06/47,789.86 = 13,125.68/x
  3. Step 3: Cross multiply
    31,856.06x = 47,789.86 × 13,125.68
  4. Step 4: Simplify right side
    31,856.06x = 627,274,406.66
  5. Step 5: Solve for x
    x = 627,274,406.66/31,856.06
  6. Step 6: Final answer
    x = 19,690.89

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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.