Home / 21,976.64-30,316.32-14,435.36

Finding the Fourth Proportional to 21,976.64, 30,316.32 and 14,435.36

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Solution

The fourth proportional to 21,976.64, 30,316.32 and 14,435.36 is: 19,913.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,976.64 : 30,316.32 = 14,435.36 : x
  2. Step 2: Convert to fraction form
    21,976.64/30,316.32 = 14,435.36/x
  3. Step 3: Cross multiply
    21,976.64x = 30,316.32 × 14,435.36
  4. Step 4: Simplify right side
    21,976.64x = 437,626,993.08
  5. Step 5: Solve for x
    x = 437,626,993.08/21,976.64
  6. Step 6: Final answer
    x = 19,913.28

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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.