Home / 26,428.72-39,643.30-21,150.60

Finding the Fourth Proportional to 26,428.72, 39,643.30 and 21,150.60

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Solution

The fourth proportional to 26,428.72, 39,643.30 and 21,150.60 is: 31,726.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,428.72 : 39,643.30 = 21,150.60 : x
  2. Step 2: Convert to fraction form
    26,428.72/39,643.30 = 21,150.60/x
  3. Step 3: Cross multiply
    26,428.72x = 39,643.30 × 21,150.60
  4. Step 4: Simplify right side
    26,428.72x = 838,479,580.98
  5. Step 5: Solve for x
    x = 838,479,580.98/26,428.72
  6. Step 6: Final answer
    x = 31,726.08

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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.