Home / 13,889.73-19,147.91-9,903.93

Finding the Fourth Proportional to 13,889.73, 19,147.91 and 9,903.93

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Solution

The fourth proportional to 13,889.73, 19,147.91 and 9,903.93 is: 13,653.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.73 : 19,147.91 = 9,903.93 : x
  2. Step 2: Convert to fraction form
    13,889.73/19,147.91 = 9,903.93/x
  3. Step 3: Cross multiply
    13,889.73x = 19,147.91 × 9,903.93
  4. Step 4: Simplify right side
    13,889.73x = 189,639,510.77
  5. Step 5: Solve for x
    x = 189,639,510.77/13,889.73
  6. Step 6: Final answer
    x = 13,653.22

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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.