Home / 13,707.12-18,924.24-8,928.72

Finding the Fourth Proportional to 13,707.12, 18,924.24 and 8,928.72

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Solution

The fourth proportional to 13,707.12, 18,924.24 and 8,928.72 is: 12,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,707.12 : 18,924.24 = 8,928.72 : x
  2. Step 2: Convert to fraction form
    13,707.12/18,924.24 = 8,928.72/x
  3. Step 3: Cross multiply
    13,707.12x = 18,924.24 × 8,928.72
  4. Step 4: Simplify right side
    13,707.12x = 168,969,240.17
  5. Step 5: Solve for x
    x = 168,969,240.17/13,707.12
  6. Step 6: Final answer
    x = 12,327.11

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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.