Home / 13,905.51-19,174.23-8,861.74

Finding the Fourth Proportional to 13,905.51, 19,174.23 and 8,861.74

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Solution

The fourth proportional to 13,905.51, 19,174.23 and 8,861.74 is: 12,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.51 : 19,174.23 = 8,861.74 : x
  2. Step 2: Convert to fraction form
    13,905.51/19,174.23 = 8,861.74/x
  3. Step 3: Cross multiply
    13,905.51x = 19,174.23 × 8,861.74
  4. Step 4: Simplify right side
    13,905.51x = 169,917,040.96
  5. Step 5: Solve for x
    x = 169,917,040.96/13,905.51
  6. Step 6: Final answer
    x = 12,219.40

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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.