Home / 13,886.61-19,143.59-9,900.81

Finding the Fourth Proportional to 13,886.61, 19,143.59 and 9,900.81

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Solution

The fourth proportional to 13,886.61, 19,143.59 and 9,900.81 is: 13,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,886.61 : 19,143.59 = 9,900.81 : x
  2. Step 2: Convert to fraction form
    13,886.61/19,143.59 = 9,900.81/x
  3. Step 3: Cross multiply
    13,886.61x = 19,143.59 × 9,900.81
  4. Step 4: Simplify right side
    13,886.61x = 189,536,902.09
  5. Step 5: Solve for x
    x = 189,536,902.09/13,886.61
  6. Step 6: Final answer
    x = 13,648.90

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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.