Home / 15,152.48-20,908.88-11,175.76

Finding the Fourth Proportional to 15,152.48, 20,908.88 and 11,175.76

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Solution

The fourth proportional to 15,152.48, 20,908.88 and 11,175.76 is: 15,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.48 : 20,908.88 = 11,175.76 : x
  2. Step 2: Convert to fraction form
    15,152.48/20,908.88 = 11,175.76/x
  3. Step 3: Cross multiply
    15,152.48x = 20,908.88 × 11,175.76
  4. Step 4: Simplify right side
    15,152.48x = 233,672,624.75
  5. Step 5: Solve for x
    x = 233,672,624.75/15,152.48
  6. Step 6: Final answer
    x = 15,421.41

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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.