Home / 15,555.50-21,465.99-8,481.77

Finding the Fourth Proportional to 15,555.50, 21,465.99 and 8,481.77

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Solution

The fourth proportional to 15,555.50, 21,465.99 and 8,481.77 is: 11,704.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.50 : 21,465.99 = 8,481.77 : x
  2. Step 2: Convert to fraction form
    15,555.50/21,465.99 = 8,481.77/x
  3. Step 3: Cross multiply
    15,555.50x = 21,465.99 × 8,481.77
  4. Step 4: Simplify right side
    15,555.50x = 182,069,482.67
  5. Step 5: Solve for x
    x = 182,069,482.67/15,555.50
  6. Step 6: Final answer
    x = 11,704.51

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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.