Home / 13,886.03-19,142.79-9,900.23

Finding the Fourth Proportional to 13,886.03, 19,142.79 and 9,900.23

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Solution

The fourth proportional to 13,886.03, 19,142.79 and 9,900.23 is: 13,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.03 : 19,142.79 = 9,900.23 : x
  2. Step 2: Convert to fraction form
    13,886.03/19,142.79 = 9,900.23/x
  3. Step 3: Cross multiply
    13,886.03x = 19,142.79 × 9,900.23
  4. Step 4: Simplify right side
    13,886.03x = 189,517,928.13
  5. Step 5: Solve for x
    x = 189,517,928.13/13,886.03
  6. Step 6: Final answer
    x = 13,648.10

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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.