Home / 13,871.18-19,129.75-9,160.22

Finding the Fourth Proportional to 13,871.18, 19,129.75 and 9,160.22

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Solution

The fourth proportional to 13,871.18, 19,129.75 and 9,160.22 is: 12,632.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.18 : 19,129.75 = 9,160.22 : x
  2. Step 2: Convert to fraction form
    13,871.18/19,129.75 = 9,160.22/x
  3. Step 3: Cross multiply
    13,871.18x = 19,129.75 × 9,160.22
  4. Step 4: Simplify right side
    13,871.18x = 175,232,718.55
  5. Step 5: Solve for x
    x = 175,232,718.55/13,871.18
  6. Step 6: Final answer
    x = 12,632.86

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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.