Home / 15,200.34-20,977.40-8,485.95

Finding the Fourth Proportional to 15,200.34, 20,977.40 and 8,485.95

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Solution

The fourth proportional to 15,200.34, 20,977.40 and 8,485.95 is: 11,711.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.34 : 20,977.40 = 8,485.95 : x
  2. Step 2: Convert to fraction form
    15,200.34/20,977.40 = 8,485.95/x
  3. Step 3: Cross multiply
    15,200.34x = 20,977.40 × 8,485.95
  4. Step 4: Simplify right side
    15,200.34x = 178,013,125.10
  5. Step 5: Solve for x
    x = 178,013,125.10/15,200.34
  6. Step 6: Final answer
    x = 11,711.13

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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.