Home / 21,621.88-29,822.71-14,054.09

Finding the Fourth Proportional to 21,621.88, 29,822.71 and 14,054.09

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Solution

The fourth proportional to 21,621.88, 29,822.71 and 14,054.09 is: 19,384.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621.88 : 29,822.71 = 14,054.09 : x
  2. Step 2: Convert to fraction form
    21,621.88/29,822.71 = 14,054.09/x
  3. Step 3: Cross multiply
    21,621.88x = 29,822.71 × 14,054.09
  4. Step 4: Simplify right side
    21,621.88x = 419,130,980.11
  5. Step 5: Solve for x
    x = 419,130,980.11/21,621.88
  6. Step 6: Final answer
    x = 19,384.58

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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.