Home / 13,107.68-18,085.20-7,800.16

Finding the Fourth Proportional to 13,107.68, 18,085.20 and 7,800.16

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Solution

The fourth proportional to 13,107.68, 18,085.20 and 7,800.16 is: 10,762.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.68 : 18,085.20 = 7,800.16 : x
  2. Step 2: Convert to fraction form
    13,107.68/18,085.20 = 7,800.16/x
  3. Step 3: Cross multiply
    13,107.68x = 18,085.20 × 7,800.16
  4. Step 4: Simplify right side
    13,107.68x = 141,067,453.63
  5. Step 5: Solve for x
    x = 141,067,453.63/13,107.68
  6. Step 6: Final answer
    x = 10,762.20

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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.