Home / 12,315.81-18,478.27-8,833.62

Finding the Fourth Proportional to 12,315.81, 18,478.27 and 8,833.62

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Solution

The fourth proportional to 12,315.81, 18,478.27 and 8,833.62 is: 13,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.81 : 18,478.27 = 8,833.62 : x
  2. Step 2: Convert to fraction form
    12,315.81/18,478.27 = 8,833.62/x
  3. Step 3: Cross multiply
    12,315.81x = 18,478.27 × 8,833.62
  4. Step 4: Simplify right side
    12,315.81x = 163,230,015.44
  5. Step 5: Solve for x
    x = 163,230,015.44/12,315.81
  6. Step 6: Final answer
    x = 13,253.70

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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.