Home / 13,890.28-19,177.52-12,395.62

Finding the Fourth Proportional to 13,890.28, 19,177.52 and 12,395.62

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Solution

The fourth proportional to 13,890.28, 19,177.52 and 12,395.62 is: 17,113.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.28 : 19,177.52 = 12,395.62 : x
  2. Step 2: Convert to fraction form
    13,890.28/19,177.52 = 12,395.62/x
  3. Step 3: Cross multiply
    13,890.28x = 19,177.52 × 12,395.62
  4. Step 4: Simplify right side
    13,890.28x = 237,717,250.46
  5. Step 5: Solve for x
    x = 237,717,250.46/13,890.28
  6. Step 6: Final answer
    x = 17,113.93

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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.