Home / 20,679.51-28,522.43-13,119.32

Finding the Fourth Proportional to 20,679.51, 28,522.43 and 13,119.32

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Solution

The fourth proportional to 20,679.51, 28,522.43 and 13,119.32 is: 18,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.51 : 28,522.43 = 13,119.32 : x
  2. Step 2: Convert to fraction form
    20,679.51/28,522.43 = 13,119.32/x
  3. Step 3: Cross multiply
    20,679.51x = 28,522.43 × 13,119.32
  4. Step 4: Simplify right side
    20,679.51x = 374,194,776.53
  5. Step 5: Solve for x
    x = 374,194,776.53/20,679.51
  6. Step 6: Final answer
    x = 18,094.95

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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.