Home / 12,159.58-18,252.81-8,712.22

Finding the Fourth Proportional to 12,159.58, 18,252.81 and 8,712.22

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Solution

The fourth proportional to 12,159.58, 18,252.81 and 8,712.22 is: 13,077.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.58 : 18,252.81 = 8,712.22 : x
  2. Step 2: Convert to fraction form
    12,159.58/18,252.81 = 8,712.22/x
  3. Step 3: Cross multiply
    12,159.58x = 18,252.81 × 8,712.22
  4. Step 4: Simplify right side
    12,159.58x = 159,022,496.34
  5. Step 5: Solve for x
    x = 159,022,496.34/12,159.58
  6. Step 6: Final answer
    x = 13,077.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.