Home / 12,900.25-19,353.21-4,580.74

Finding the Fourth Proportional to 12,900.25, 19,353.21 and 4,580.74

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Solution

The fourth proportional to 12,900.25, 19,353.21 and 4,580.74 is: 6,872.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.25 : 19,353.21 = 4,580.74 : x
  2. Step 2: Convert to fraction form
    12,900.25/19,353.21 = 4,580.74/x
  3. Step 3: Cross multiply
    12,900.25x = 19,353.21 × 4,580.74
  4. Step 4: Simplify right side
    12,900.25x = 88,652,023.18
  5. Step 5: Solve for x
    x = 88,652,023.18/12,900.25
  6. Step 6: Final answer
    x = 6,872.12

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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.