Home / 15,184.87-20,955.17-8,812.70

Finding the Fourth Proportional to 15,184.87, 20,955.17 and 8,812.70

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Solution

The fourth proportional to 15,184.87, 20,955.17 and 8,812.70 is: 12,161.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,184.87 : 20,955.17 = 8,812.70 : x
  2. Step 2: Convert to fraction form
    15,184.87/20,955.17 = 8,812.70/x
  3. Step 3: Cross multiply
    15,184.87x = 20,955.17 × 8,812.70
  4. Step 4: Simplify right side
    15,184.87x = 184,671,622.50
  5. Step 5: Solve for x
    x = 184,671,622.50/15,184.87
  6. Step 6: Final answer
    x = 12,161.56

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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.