Home / 13,485.52-20,215.21-5,159.12

Finding the Fourth Proportional to 13,485.52, 20,215.21 and 5,159.12

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Solution

The fourth proportional to 13,485.52, 20,215.21 and 5,159.12 is: 7,733.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.52 : 20,215.21 = 5,159.12 : x
  2. Step 2: Convert to fraction form
    13,485.52/20,215.21 = 5,159.12/x
  3. Step 3: Cross multiply
    13,485.52x = 20,215.21 × 5,159.12
  4. Step 4: Simplify right side
    13,485.52x = 104,292,694.22
  5. Step 5: Solve for x
    x = 104,292,694.22/13,485.52
  6. Step 6: Final answer
    x = 7,733.68

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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.