Home / 26,890.56-40,335.80-12,807.88

Finding the Fourth Proportional to 26,890.56, 40,335.80 and 12,807.88

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Solution

The fourth proportional to 26,890.56, 40,335.80 and 12,807.88 is: 19,211.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,890.56 : 40,335.80 = 12,807.88 : x
  2. Step 2: Convert to fraction form
    26,890.56/40,335.80 = 12,807.88/x
  3. Step 3: Cross multiply
    26,890.56x = 40,335.80 × 12,807.88
  4. Step 4: Simplify right side
    26,890.56x = 516,615,921.23
  5. Step 5: Solve for x
    x = 516,615,921.23/26,890.56
  6. Step 6: Final answer
    x = 19,211.79

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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.