Home / 15,010.23-20,715.33-8,638.86

Finding the Fourth Proportional to 15,010.23, 20,715.33 and 8,638.86

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Solution

The fourth proportional to 15,010.23, 20,715.33 and 8,638.86 is: 11,922.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,010.23 : 20,715.33 = 8,638.86 : x
  2. Step 2: Convert to fraction form
    15,010.23/20,715.33 = 8,638.86/x
  3. Step 3: Cross multiply
    15,010.23x = 20,715.33 × 8,638.86
  4. Step 4: Simplify right side
    15,010.23x = 178,956,835.72
  5. Step 5: Solve for x
    x = 178,956,835.72/15,010.23
  6. Step 6: Final answer
    x = 11,922.32

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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.