Home / 21,787.07-30,055.07-14,237.82

Finding the Fourth Proportional to 21,787.07, 30,055.07 and 14,237.82

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Solution

The fourth proportional to 21,787.07, 30,055.07 and 14,237.82 is: 19,640.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.07 : 30,055.07 = 14,237.82 : x
  2. Step 2: Convert to fraction form
    21,787.07/30,055.07 = 14,237.82/x
  3. Step 3: Cross multiply
    21,787.07x = 30,055.07 × 14,237.82
  4. Step 4: Simplify right side
    21,787.07x = 427,918,605.56
  5. Step 5: Solve for x
    x = 427,918,605.56/21,787.07
  6. Step 6: Final answer
    x = 19,640.95

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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.