Home / 21,220.56-29,253.96-14,913.36

Finding the Fourth Proportional to 21,220.56, 29,253.96 and 14,913.36

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Solution

The fourth proportional to 21,220.56, 29,253.96 and 14,913.36 is: 20,559.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.56 : 29,253.96 = 14,913.36 : x
  2. Step 2: Convert to fraction form
    21,220.56/29,253.96 = 14,913.36/x
  3. Step 3: Cross multiply
    21,220.56x = 29,253.96 × 14,913.36
  4. Step 4: Simplify right side
    21,220.56x = 436,274,836.91
  5. Step 5: Solve for x
    x = 436,274,836.91/21,220.56
  6. Step 6: Final answer
    x = 20,559.06

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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.