Home / 21,426.32-29,564.80-13,462.90

Finding the Fourth Proportional to 21,426.32, 29,564.80 and 13,462.90

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Solution

The fourth proportional to 21,426.32, 29,564.80 and 13,462.90 is: 18,576.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.32 : 29,564.80 = 13,462.90 : x
  2. Step 2: Convert to fraction form
    21,426.32/29,564.80 = 13,462.90/x
  3. Step 3: Cross multiply
    21,426.32x = 29,564.80 × 13,462.90
  4. Step 4: Simplify right side
    21,426.32x = 398,027,945.92
  5. Step 5: Solve for x
    x = 398,027,945.92/21,426.32
  6. Step 6: Final answer
    x = 18,576.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.