Home / 19,820.60-27,370.94-12,759.28

Finding the Fourth Proportional to 19,820.60, 27,370.94 and 12,759.28

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Solution

The fourth proportional to 19,820.60, 27,370.94 and 12,759.28 is: 17,619.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,820.60 : 27,370.94 = 12,759.28 : x
  2. Step 2: Convert to fraction form
    19,820.60/27,370.94 = 12,759.28/x
  3. Step 3: Cross multiply
    19,820.60x = 27,370.94 × 12,759.28
  4. Step 4: Simplify right side
    19,820.60x = 349,233,487.32
  5. Step 5: Solve for x
    x = 349,233,487.32/19,820.60
  6. Step 6: Final answer
    x = 17,619.72

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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.