Home / 21,902.42-30,216.16-14,339.32

Finding the Fourth Proportional to 21,902.42, 30,216.16 and 14,339.32

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Solution

The fourth proportional to 21,902.42, 30,216.16 and 14,339.32 is: 19,782.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,902.42 : 30,216.16 = 14,339.32 : x
  2. Step 2: Convert to fraction form
    21,902.42/30,216.16 = 14,339.32/x
  3. Step 3: Cross multiply
    21,902.42x = 30,216.16 × 14,339.32
  4. Step 4: Simplify right side
    21,902.42x = 433,279,187.41
  5. Step 5: Solve for x
    x = 433,279,187.41/21,902.42
  6. Step 6: Final answer
    x = 19,782.25

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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.