Home / 26,956.30-40,434.45-21,318.70

Finding the Fourth Proportional to 26,956.30, 40,434.45 and 21,318.70

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Solution

The fourth proportional to 26,956.30, 40,434.45 and 21,318.70 is: 31,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,956.30 : 40,434.45 = 21,318.70 : x
  2. Step 2: Convert to fraction form
    26,956.30/40,434.45 = 21,318.70/x
  3. Step 3: Cross multiply
    26,956.30x = 40,434.45 × 21,318.70
  4. Step 4: Simplify right side
    26,956.30x = 862,009,909.22
  5. Step 5: Solve for x
    x = 862,009,909.22/26,956.30
  6. Step 6: Final answer
    x = 31,978.05

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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.