Home / 11,822.81-16,315.25-6,445.30

Finding the Fourth Proportional to 11,822.81, 16,315.25 and 6,445.30

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Solution

The fourth proportional to 11,822.81, 16,315.25 and 6,445.30 is: 8,894.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,822.81 : 16,315.25 = 6,445.30 : x
  2. Step 2: Convert to fraction form
    11,822.81/16,315.25 = 6,445.30/x
  3. Step 3: Cross multiply
    11,822.81x = 16,315.25 × 6,445.30
  4. Step 4: Simplify right side
    11,822.81x = 105,156,680.83
  5. Step 5: Solve for x
    x = 105,156,680.83/11,822.81
  6. Step 6: Final answer
    x = 8,894.39

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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.