Home / 13,871.57-19,139.93-7,901.66

Finding the Fourth Proportional to 13,871.57, 19,139.93 and 7,901.66

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Solution

The fourth proportional to 13,871.57, 19,139.93 and 7,901.66 is: 10,902.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.57 : 19,139.93 = 7,901.66 : x
  2. Step 2: Convert to fraction form
    13,871.57/19,139.93 = 7,901.66/x
  3. Step 3: Cross multiply
    13,871.57x = 19,139.93 × 7,901.66
  4. Step 4: Simplify right side
    13,871.57x = 151,237,257.26
  5. Step 5: Solve for x
    x = 151,237,257.26/13,871.57
  6. Step 6: Final answer
    x = 10,902.68

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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.