Home / 21,140.04-29,173.60-11,579.76

Finding the Fourth Proportional to 21,140.04, 29,173.60 and 11,579.76

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Solution

The fourth proportional to 21,140.04, 29,173.60 and 11,579.76 is: 15,980.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,140.04 : 29,173.60 = 11,579.76 : x
  2. Step 2: Convert to fraction form
    21,140.04/29,173.60 = 11,579.76/x
  3. Step 3: Cross multiply
    21,140.04x = 29,173.60 × 11,579.76
  4. Step 4: Simplify right side
    21,140.04x = 337,823,286.34
  5. Step 5: Solve for x
    x = 337,823,286.34/21,140.04
  6. Step 6: Final answer
    x = 15,980.26

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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.