Home / 21,828.94-30,100.10-14,743.06

Finding the Fourth Proportional to 21,828.94, 30,100.10 and 14,743.06

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Solution

The fourth proportional to 21,828.94, 30,100.10 and 14,743.06 is: 20,329.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,828.94 : 30,100.10 = 14,743.06 : x
  2. Step 2: Convert to fraction form
    21,828.94/30,100.10 = 14,743.06/x
  3. Step 3: Cross multiply
    21,828.94x = 30,100.10 × 14,743.06
  4. Step 4: Simplify right side
    21,828.94x = 443,767,580.31
  5. Step 5: Solve for x
    x = 443,767,580.31/21,828.94
  6. Step 6: Final answer
    x = 20,329.32

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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.