Home / 11,128.70-15,359.23-6,412.06

Finding the Fourth Proportional to 11,128.70, 15,359.23 and 6,412.06

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Solution

The fourth proportional to 11,128.70, 15,359.23 and 6,412.06 is: 8,849.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.70 : 15,359.23 = 6,412.06 : x
  2. Step 2: Convert to fraction form
    11,128.70/15,359.23 = 6,412.06/x
  3. Step 3: Cross multiply
    11,128.70x = 15,359.23 × 6,412.06
  4. Step 4: Simplify right side
    11,128.70x = 98,484,304.31
  5. Step 5: Solve for x
    x = 98,484,304.31/11,128.70
  6. Step 6: Final answer
    x = 8,849.58

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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.