Home / 20,935.36-28,894.88-13,862.08

Finding the Fourth Proportional to 20,935.36, 28,894.88 and 13,862.08

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Solution

The fourth proportional to 20,935.36, 28,894.88 and 13,862.08 is: 19,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.36 : 28,894.88 = 13,862.08 : x
  2. Step 2: Convert to fraction form
    20,935.36/28,894.88 = 13,862.08/x
  3. Step 3: Cross multiply
    20,935.36x = 28,894.88 × 13,862.08
  4. Step 4: Simplify right side
    20,935.36x = 400,543,138.15
  5. Step 5: Solve for x
    x = 400,543,138.15/20,935.36
  6. Step 6: Final answer
    x = 19,132.37

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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.