Home / 11,150.30-15,384.69-6,434.57

Finding the Fourth Proportional to 11,150.30, 15,384.69 and 6,434.57

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Solution

The fourth proportional to 11,150.30, 15,384.69 and 6,434.57 is: 8,878.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.30 : 15,384.69 = 6,434.57 : x
  2. Step 2: Convert to fraction form
    11,150.30/15,384.69 = 6,434.57/x
  3. Step 3: Cross multiply
    11,150.30x = 15,384.69 × 6,434.57
  4. Step 4: Simplify right side
    11,150.30x = 98,993,787.81
  5. Step 5: Solve for x
    x = 98,993,787.81/11,150.30
  6. Step 6: Final answer
    x = 8,878.13

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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.