Home / 13,901.40-19,178.67-8,865.81

Finding the Fourth Proportional to 13,901.40, 19,178.67 and 8,865.81

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Solution

The fourth proportional to 13,901.40, 19,178.67 and 8,865.81 is: 12,231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,901.40 : 19,178.67 = 8,865.81 : x
  2. Step 2: Convert to fraction form
    13,901.40/19,178.67 = 8,865.81/x
  3. Step 3: Cross multiply
    13,901.40x = 19,178.67 × 8,865.81
  4. Step 4: Simplify right side
    13,901.40x = 170,034,444.27
  5. Step 5: Solve for x
    x = 170,034,444.27/13,901.40
  6. Step 6: Final answer
    x = 12,231.46

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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.