Home / 15,508.77-21,403.26-8,795.58

Finding the Fourth Proportional to 15,508.77, 21,403.26 and 8,795.58

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Solution

The fourth proportional to 15,508.77, 21,403.26 and 8,795.58 is: 12,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,508.77 : 21,403.26 = 8,795.58 : x
  2. Step 2: Convert to fraction form
    15,508.77/21,403.26 = 8,795.58/x
  3. Step 3: Cross multiply
    15,508.77x = 21,403.26 × 8,795.58
  4. Step 4: Simplify right side
    15,508.77x = 188,254,085.59
  5. Step 5: Solve for x
    x = 188,254,085.59/15,508.77
  6. Step 6: Final answer
    x = 12,138.56

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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.