Home / 26,440.64-39,669.60-20,617.28

Finding the Fourth Proportional to 26,440.64, 39,669.60 and 20,617.28

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Solution

The fourth proportional to 26,440.64, 39,669.60 and 20,617.28 is: 30,932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,440.64 : 39,669.60 = 20,617.28 : x
  2. Step 2: Convert to fraction form
    26,440.64/39,669.60 = 20,617.28/x
  3. Step 3: Cross multiply
    26,440.64x = 39,669.60 × 20,617.28
  4. Step 4: Simplify right side
    26,440.64x = 817,879,250.69
  5. Step 5: Solve for x
    x = 817,879,250.69/26,440.64
  6. Step 6: Final answer
    x = 30,932.66

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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.