Home / 12,002.56-18,005.64-4,210.75

Finding the Fourth Proportional to 12,002.56, 18,005.64 and 4,210.75

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Solution

The fourth proportional to 12,002.56, 18,005.64 and 4,210.75 is: 6,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,002.56 : 18,005.64 = 4,210.75 : x
  2. Step 2: Convert to fraction form
    12,002.56/18,005.64 = 4,210.75/x
  3. Step 3: Cross multiply
    12,002.56x = 18,005.64 × 4,210.75
  4. Step 4: Simplify right side
    12,002.56x = 75,817,248.63
  5. Step 5: Solve for x
    x = 75,817,248.63/12,002.56
  6. Step 6: Final answer
    x = 6,316.76

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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.