Home / 13,143.36-19,715.80-5,347.92

Finding the Fourth Proportional to 13,143.36, 19,715.80 and 5,347.92

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Solution

The fourth proportional to 13,143.36, 19,715.80 and 5,347.92 is: 8,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.36 : 19,715.80 = 5,347.92 : x
  2. Step 2: Convert to fraction form
    13,143.36/19,715.80 = 5,347.92/x
  3. Step 3: Cross multiply
    13,143.36x = 19,715.80 × 5,347.92
  4. Step 4: Simplify right side
    13,143.36x = 105,438,521.14
  5. Step 5: Solve for x
    x = 105,438,521.14/13,143.36
  6. Step 6: Final answer
    x = 8,022.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.