Home / 15,434.40-21,299.22-8,360.76

Finding the Fourth Proportional to 15,434.40, 21,299.22 and 8,360.76

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Solution

The fourth proportional to 15,434.40, 21,299.22 and 8,360.76 is: 11,537.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.40 : 21,299.22 = 8,360.76 : x
  2. Step 2: Convert to fraction form
    15,434.40/21,299.22 = 8,360.76/x
  3. Step 3: Cross multiply
    15,434.40x = 21,299.22 × 8,360.76
  4. Step 4: Simplify right side
    15,434.40x = 178,077,666.61
  5. Step 5: Solve for x
    x = 178,077,666.61/15,434.40
  6. Step 6: Final answer
    x = 11,537.71

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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.