Home / 11,505.90-15,877.79-6,470.34

Finding the Fourth Proportional to 11,505.90, 15,877.79 and 6,470.34

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Solution

The fourth proportional to 11,505.90, 15,877.79 and 6,470.34 is: 8,928.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,505.90 : 15,877.79 = 6,470.34 : x
  2. Step 2: Convert to fraction form
    11,505.90/15,877.79 = 6,470.34/x
  3. Step 3: Cross multiply
    11,505.90x = 15,877.79 × 6,470.34
  4. Step 4: Simplify right side
    11,505.90x = 102,734,632.12
  5. Step 5: Solve for x
    x = 102,734,632.12/11,505.90
  6. Step 6: Final answer
    x = 8,928.86

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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.