Home / 12,856.89-19,285.35-5,065.50

Finding the Fourth Proportional to 12,856.89, 19,285.35 and 5,065.50

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Solution

The fourth proportional to 12,856.89, 19,285.35 and 5,065.50 is: 7,598.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,856.89 : 19,285.35 = 5,065.50 : x
  2. Step 2: Convert to fraction form
    12,856.89/19,285.35 = 5,065.50/x
  3. Step 3: Cross multiply
    12,856.89x = 19,285.35 × 5,065.50
  4. Step 4: Simplify right side
    12,856.89x = 97,689,940.43
  5. Step 5: Solve for x
    x = 97,689,940.43/12,856.89
  6. Step 6: Final answer
    x = 7,598.26

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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.