Home / 19,873.36-27,419.88-12,797.20

Finding the Fourth Proportional to 19,873.36, 27,419.88 and 12,797.20

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Solution

The fourth proportional to 19,873.36, 27,419.88 and 12,797.20 is: 17,656.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,873.36 : 27,419.88 = 12,797.20 : x
  2. Step 2: Convert to fraction form
    19,873.36/27,419.88 = 12,797.20/x
  3. Step 3: Cross multiply
    19,873.36x = 27,419.88 × 12,797.20
  4. Step 4: Simplify right side
    19,873.36x = 350,897,688.34
  5. Step 5: Solve for x
    x = 350,897,688.34/19,873.36
  6. Step 6: Final answer
    x = 17,656.69

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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.