Home / 21,415.85-32,105.30-10,307.26

Finding the Fourth Proportional to 21,415.85, 32,105.30 and 10,307.26

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Solution

The fourth proportional to 21,415.85, 32,105.30 and 10,307.26 is: 15,451.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.85 : 32,105.30 = 10,307.26 : x
  2. Step 2: Convert to fraction form
    21,415.85/32,105.30 = 10,307.26/x
  3. Step 3: Cross multiply
    21,415.85x = 32,105.30 × 10,307.26
  4. Step 4: Simplify right side
    21,415.85x = 330,917,462.42
  5. Step 5: Solve for x
    x = 330,917,462.42/21,415.85
  6. Step 6: Final answer
    x = 15,451.99

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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.