Home / 21,220.96-29,264.56-14,047.60

Finding the Fourth Proportional to 21,220.96, 29,264.56 and 14,047.60

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Solution

The fourth proportional to 21,220.96, 29,264.56 and 14,047.60 is: 19,372.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.96 : 29,264.56 = 14,047.60 : x
  2. Step 2: Convert to fraction form
    21,220.96/29,264.56 = 14,047.60/x
  3. Step 3: Cross multiply
    21,220.96x = 29,264.56 × 14,047.60
  4. Step 4: Simplify right side
    21,220.96x = 411,096,833.06
  5. Step 5: Solve for x
    x = 411,096,833.06/21,220.96
  6. Step 6: Final answer
    x = 19,372.21

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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.