Home / 13,440.09-18,562.86-8,956.47

Finding the Fourth Proportional to 13,440.09, 18,562.86 and 8,956.47

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Solution

The fourth proportional to 13,440.09, 18,562.86 and 8,956.47 is: 12,370.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.09 : 18,562.86 = 8,956.47 : x
  2. Step 2: Convert to fraction form
    13,440.09/18,562.86 = 8,956.47/x
  3. Step 3: Cross multiply
    13,440.09x = 18,562.86 × 8,956.47
  4. Step 4: Simplify right side
    13,440.09x = 166,257,698.70
  5. Step 5: Solve for x
    x = 166,257,698.70/13,440.09
  6. Step 6: Final answer
    x = 12,370.28

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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.