Home / 15,148.30-20,904.38-8,433.76

Finding the Fourth Proportional to 15,148.30, 20,904.38 and 8,433.76

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Solution

The fourth proportional to 15,148.30, 20,904.38 and 8,433.76 is: 11,638.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148.30 : 20,904.38 = 8,433.76 : x
  2. Step 2: Convert to fraction form
    15,148.30/20,904.38 = 8,433.76/x
  3. Step 3: Cross multiply
    15,148.30x = 20,904.38 × 8,433.76
  4. Step 4: Simplify right side
    15,148.30x = 176,302,523.87
  5. Step 5: Solve for x
    x = 176,302,523.87/15,148.30
  6. Step 6: Final answer
    x = 11,638.44

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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.