Home / 43,286.06-64,931.56-12,123.74

Finding the Fourth Proportional to 43,286.06, 64,931.56 and 12,123.74

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Solution

The fourth proportional to 43,286.06, 64,931.56 and 12,123.74 is: 18,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,286.06 : 64,931.56 = 12,123.74 : x
  2. Step 2: Convert to fraction form
    43,286.06/64,931.56 = 12,123.74/x
  3. Step 3: Cross multiply
    43,286.06x = 64,931.56 × 12,123.74
  4. Step 4: Simplify right side
    43,286.06x = 787,213,483.25
  5. Step 5: Solve for x
    x = 787,213,483.25/43,286.06
  6. Step 6: Final answer
    x = 18,186.30

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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.