Home / 15,635.02-21,575.89-8,920.51

Finding the Fourth Proportional to 15,635.02, 21,575.89 and 8,920.51

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Solution

The fourth proportional to 15,635.02, 21,575.89 and 8,920.51 is: 12,310.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,635.02 : 21,575.89 = 8,920.51 : x
  2. Step 2: Convert to fraction form
    15,635.02/21,575.89 = 8,920.51/x
  3. Step 3: Cross multiply
    15,635.02x = 21,575.89 × 8,920.51
  4. Step 4: Simplify right side
    15,635.02x = 192,467,942.50
  5. Step 5: Solve for x
    x = 192,467,942.50/15,635.02
  6. Step 6: Final answer
    x = 12,310.05

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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.