Home / 21,079.87-29,094.30-13,535.73

Finding the Fourth Proportional to 21,079.87, 29,094.30 and 13,535.73

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Solution

The fourth proportional to 21,079.87, 29,094.30 and 13,535.73 is: 18,681.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.87 : 29,094.30 = 13,535.73 : x
  2. Step 2: Convert to fraction form
    21,079.87/29,094.30 = 13,535.73/x
  3. Step 3: Cross multiply
    21,079.87x = 29,094.30 × 13,535.73
  4. Step 4: Simplify right side
    21,079.87x = 393,812,589.34
  5. Step 5: Solve for x
    x = 393,812,589.34/21,079.87
  6. Step 6: Final answer
    x = 18,681.93

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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.