Home / 12,558.90-17,287.79-10,856.62

Finding the Fourth Proportional to 12,558.90, 17,287.79 and 10,856.62

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Solution

The fourth proportional to 12,558.90, 17,287.79 and 10,856.62 is: 14,944.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.90 : 17,287.79 = 10,856.62 : x
  2. Step 2: Convert to fraction form
    12,558.90/17,287.79 = 10,856.62/x
  3. Step 3: Cross multiply
    12,558.90x = 17,287.79 × 10,856.62
  4. Step 4: Simplify right side
    12,558.90x = 187,686,966.67
  5. Step 5: Solve for x
    x = 187,686,966.67/12,558.90
  6. Step 6: Final answer
    x = 14,944.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.