Home / 15,010.32-20,690.30-11,818.56

Finding the Fourth Proportional to 15,010.32, 20,690.30 and 11,818.56

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Solution

The fourth proportional to 15,010.32, 20,690.30 and 11,818.56 is: 16,290.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,010.32 : 20,690.30 = 11,818.56 : x
  2. Step 2: Convert to fraction form
    15,010.32/20,690.30 = 11,818.56/x
  3. Step 3: Cross multiply
    15,010.32x = 20,690.30 × 11,818.56
  4. Step 4: Simplify right side
    15,010.32x = 244,529,581.51
  5. Step 5: Solve for x
    x = 244,529,581.51/15,010.32
  6. Step 6: Final answer
    x = 16,290.76

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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.