Home / 15,184.62-20,953.75-8,811.40

Finding the Fourth Proportional to 15,184.62, 20,953.75 and 8,811.40

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Solution

The fourth proportional to 15,184.62, 20,953.75 and 8,811.40 is: 12,159.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,184.62 : 20,953.75 = 8,811.40 : x
  2. Step 2: Convert to fraction form
    15,184.62/20,953.75 = 8,811.40/x
  3. Step 3: Cross multiply
    15,184.62x = 20,953.75 × 8,811.40
  4. Step 4: Simplify right side
    15,184.62x = 184,631,872.75
  5. Step 5: Solve for x
    x = 184,631,872.75/15,184.62
  6. Step 6: Final answer
    x = 12,159.14

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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.