Home / 15,595.21-21,519.39-8,879.90

Finding the Fourth Proportional to 15,595.21, 21,519.39 and 8,879.90

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Solution

The fourth proportional to 15,595.21, 21,519.39 and 8,879.90 is: 12,253.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,595.21 : 21,519.39 = 8,879.90 : x
  2. Step 2: Convert to fraction form
    15,595.21/21,519.39 = 8,879.90/x
  3. Step 3: Cross multiply
    15,595.21x = 21,519.39 × 8,879.90
  4. Step 4: Simplify right side
    15,595.21x = 191,090,085.06
  5. Step 5: Solve for x
    x = 191,090,085.06/15,595.21
  6. Step 6: Final answer
    x = 12,253.13

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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.