Home / 19,730.36-27,231.72-13,020.32

Finding the Fourth Proportional to 19,730.36, 27,231.72 and 13,020.32

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Solution

The fourth proportional to 19,730.36, 27,231.72 and 13,020.32 is: 17,970.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.36 : 27,231.72 = 13,020.32 : x
  2. Step 2: Convert to fraction form
    19,730.36/27,231.72 = 13,020.32/x
  3. Step 3: Cross multiply
    19,730.36x = 27,231.72 × 13,020.32
  4. Step 4: Simplify right side
    19,730.36x = 354,565,708.55
  5. Step 5: Solve for x
    x = 354,565,708.55/19,730.36
  6. Step 6: Final answer
    x = 17,970.56

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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.