Home / 20,607.66-28,438.53-11,176.22

Finding the Fourth Proportional to 20,607.66, 28,438.53 and 11,176.22

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Solution

The fourth proportional to 20,607.66, 28,438.53 and 11,176.22 is: 15,423.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.66 : 28,438.53 = 11,176.22 : x
  2. Step 2: Convert to fraction form
    20,607.66/28,438.53 = 11,176.22/x
  3. Step 3: Cross multiply
    20,607.66x = 28,438.53 × 11,176.22
  4. Step 4: Simplify right side
    20,607.66x = 317,835,125.56
  5. Step 5: Solve for x
    x = 317,835,125.56/20,607.66
  6. Step 6: Final answer
    x = 15,423.15

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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.