Home / 12,007.70-18,003.45-6,386.30

Finding the Fourth Proportional to 12,007.70, 18,003.45 and 6,386.30

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Solution

The fourth proportional to 12,007.70, 18,003.45 and 6,386.30 is: 9,575.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,007.70 : 18,003.45 = 6,386.30 : x
  2. Step 2: Convert to fraction form
    12,007.70/18,003.45 = 6,386.30/x
  3. Step 3: Cross multiply
    12,007.70x = 18,003.45 × 6,386.30
  4. Step 4: Simplify right side
    12,007.70x = 114,975,432.74
  5. Step 5: Solve for x
    x = 114,975,432.74/12,007.70
  6. Step 6: Final answer
    x = 9,575.14

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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.