Home / 10,426.40-15,639.63-5,231.06

Finding the Fourth Proportional to 10,426.40, 15,639.63 and 5,231.06

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Solution

The fourth proportional to 10,426.40, 15,639.63 and 5,231.06 is: 7,846.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,426.40 : 15,639.63 = 5,231.06 : x
  2. Step 2: Convert to fraction form
    10,426.40/15,639.63 = 5,231.06/x
  3. Step 3: Cross multiply
    10,426.40x = 15,639.63 × 5,231.06
  4. Step 4: Simplify right side
    10,426.40x = 81,811,842.91
  5. Step 5: Solve for x
    x = 81,811,842.91/10,426.40
  6. Step 6: Final answer
    x = 7,846.61

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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.