Home / 12,856.14-19,285.63-4,089.01

Finding the Fourth Proportional to 12,856.14, 19,285.63 and 4,089.01

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Solution

The fourth proportional to 12,856.14, 19,285.63 and 4,089.01 is: 6,133.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,856.14 : 19,285.63 = 4,089.01 : x
  2. Step 2: Convert to fraction form
    12,856.14/19,285.63 = 4,089.01/x
  3. Step 3: Cross multiply
    12,856.14x = 19,285.63 × 4,089.01
  4. Step 4: Simplify right side
    12,856.14x = 78,859,098.49
  5. Step 5: Solve for x
    x = 78,859,098.49/12,856.14
  6. Step 6: Final answer
    x = 6,133.96

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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.