Home / 15,309.05-21,127.70-8,595.11

Finding the Fourth Proportional to 15,309.05, 21,127.70 and 8,595.11

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Solution

The fourth proportional to 15,309.05, 21,127.70 and 8,595.11 is: 11,861.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,309.05 : 21,127.70 = 8,595.11 : x
  2. Step 2: Convert to fraction form
    15,309.05/21,127.70 = 8,595.11/x
  3. Step 3: Cross multiply
    15,309.05x = 21,127.70 × 8,595.11
  4. Step 4: Simplify right side
    15,309.05x = 181,594,979.85
  5. Step 5: Solve for x
    x = 181,594,979.85/15,309.05
  6. Step 6: Final answer
    x = 11,861.94

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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.