Home / 14,905.72-20,569.48-8,191.35

Finding the Fourth Proportional to 14,905.72, 20,569.48 and 8,191.35

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Solution

The fourth proportional to 14,905.72, 20,569.48 and 8,191.35 is: 11,303.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,905.72 : 20,569.48 = 8,191.35 : x
  2. Step 2: Convert to fraction form
    14,905.72/20,569.48 = 8,191.35/x
  3. Step 3: Cross multiply
    14,905.72x = 20,569.48 × 8,191.35
  4. Step 4: Simplify right side
    14,905.72x = 168,491,707.15
  5. Step 5: Solve for x
    x = 168,491,707.15/14,905.72
  6. Step 6: Final answer
    x = 11,303.83

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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.