Home / 21,857.04-30,177.36-14,307.84

Finding the Fourth Proportional to 21,857.04, 30,177.36 and 14,307.84

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Solution

The fourth proportional to 21,857.04, 30,177.36 and 14,307.84 is: 19,754.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,857.04 : 30,177.36 = 14,307.84 : x
  2. Step 2: Convert to fraction form
    21,857.04/30,177.36 = 14,307.84/x
  3. Step 3: Cross multiply
    21,857.04x = 30,177.36 × 14,307.84
  4. Step 4: Simplify right side
    21,857.04x = 431,772,838.50
  5. Step 5: Solve for x
    x = 431,772,838.50/21,857.04
  6. Step 6: Final answer
    x = 19,754.41

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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.