Home / 21,721.02-30,006.63-14,678.34

Finding the Fourth Proportional to 21,721.02, 30,006.63 and 14,678.34

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Solution

The fourth proportional to 21,721.02, 30,006.63 and 14,678.34 is: 20,277.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,721.02 : 30,006.63 = 14,678.34 : x
  2. Step 2: Convert to fraction form
    21,721.02/30,006.63 = 14,678.34/x
  3. Step 3: Cross multiply
    21,721.02x = 30,006.63 × 14,678.34
  4. Step 4: Simplify right side
    21,721.02x = 440,447,517.39
  5. Step 5: Solve for x
    x = 440,447,517.39/21,721.02
  6. Step 6: Final answer
    x = 20,277.48

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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.