Home / 15,184.91-20,955.69-8,811.02

Finding the Fourth Proportional to 15,184.91, 20,955.69 and 8,811.02

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Solution

The fourth proportional to 15,184.91, 20,955.69 and 8,811.02 is: 12,159.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,184.91 : 20,955.69 = 8,811.02 : x
  2. Step 2: Convert to fraction form
    15,184.91/20,955.69 = 8,811.02/x
  3. Step 3: Cross multiply
    15,184.91x = 20,955.69 × 8,811.02
  4. Step 4: Simplify right side
    15,184.91x = 184,640,898.93
  5. Step 5: Solve for x
    x = 184,640,898.93/15,184.91
  6. Step 6: Final answer
    x = 12,159.50

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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.