Home / 12,856.56-19,276.50-8,460.66

Finding the Fourth Proportional to 12,856.56, 19,276.50 and 8,460.66

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Solution

The fourth proportional to 12,856.56, 19,276.50 and 8,460.66 is: 12,685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,856.56 : 19,276.50 = 8,460.66 : x
  2. Step 2: Convert to fraction form
    12,856.56/19,276.50 = 8,460.66/x
  3. Step 3: Cross multiply
    12,856.56x = 19,276.50 × 8,460.66
  4. Step 4: Simplify right side
    12,856.56x = 163,091,912.49
  5. Step 5: Solve for x
    x = 163,091,912.49/12,856.56
  6. Step 6: Final answer
    x = 12,685.50

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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.