Home / 20,079.36-27,719.04-13,376.16

Finding the Fourth Proportional to 20,079.36, 27,719.04 and 13,376.16

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Solution

The fourth proportional to 20,079.36, 27,719.04 and 13,376.16 is: 18,465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.36 : 27,719.04 = 13,376.16 : x
  2. Step 2: Convert to fraction form
    20,079.36/27,719.04 = 13,376.16/x
  3. Step 3: Cross multiply
    20,079.36x = 27,719.04 × 13,376.16
  4. Step 4: Simplify right side
    20,079.36x = 370,774,314.09
  5. Step 5: Solve for x
    x = 370,774,314.09/20,079.36
  6. Step 6: Final answer
    x = 18,465.44

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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.