Home / 13,271.19-18,315.09-7,892.16

Finding the Fourth Proportional to 13,271.19, 18,315.09 and 7,892.16

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Solution

The fourth proportional to 13,271.19, 18,315.09 and 7,892.16 is: 10,891.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.19 : 18,315.09 = 7,892.16 : x
  2. Step 2: Convert to fraction form
    13,271.19/18,315.09 = 7,892.16/x
  3. Step 3: Cross multiply
    13,271.19x = 18,315.09 × 7,892.16
  4. Step 4: Simplify right side
    13,271.19x = 144,545,620.69
  5. Step 5: Solve for x
    x = 144,545,620.69/13,271.19
  6. Step 6: Final answer
    x = 10,891.68

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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.