Home / 10,055.21-13,882.30-7,812.85

Finding the Fourth Proportional to 10,055.21, 13,882.30 and 7,812.85

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Solution

The fourth proportional to 10,055.21, 13,882.30 and 7,812.85 is: 10,786.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,055.21 : 13,882.30 = 7,812.85 : x
  2. Step 2: Convert to fraction form
    10,055.21/13,882.30 = 7,812.85/x
  3. Step 3: Cross multiply
    10,055.21x = 13,882.30 × 7,812.85
  4. Step 4: Simplify right side
    10,055.21x = 108,460,275.85
  5. Step 5: Solve for x
    x = 108,460,275.85/10,055.21
  6. Step 6: Final answer
    x = 10,786.48

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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.