Home / 15,177.76-20,950.32-8,890

Finding the Fourth Proportional to 15,177.76, 20,950.32 and 8,890

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Solution

The fourth proportional to 15,177.76, 20,950.32 and 8,890 is: 12,271.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,177.76 : 20,950.32 = 8,890 : x
  2. Step 2: Convert to fraction form
    15,177.76/20,950.32 = 8,890/x
  3. Step 3: Cross multiply
    15,177.76x = 20,950.32 × 8,890
  4. Step 4: Simplify right side
    15,177.76x = 186,248,344.80
  5. Step 5: Solve for x
    x = 186,248,344.80/15,177.76
  6. Step 6: Final answer
    x = 12,271.14

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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.