Home / 15,163.83-20,925.14-8,790.75

Finding the Fourth Proportional to 15,163.83, 20,925.14 and 8,790.75

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Solution

The fourth proportional to 15,163.83, 20,925.14 and 8,790.75 is: 12,130.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.83 : 20,925.14 = 8,790.75 : x
  2. Step 2: Convert to fraction form
    15,163.83/20,925.14 = 8,790.75/x
  3. Step 3: Cross multiply
    15,163.83x = 20,925.14 × 8,790.75
  4. Step 4: Simplify right side
    15,163.83x = 183,947,630.50
  5. Step 5: Solve for x
    x = 183,947,630.50/15,163.83
  6. Step 6: Final answer
    x = 12,130.68

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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.