Home / 21,141.06-29,173.53-11,580.45

Finding the Fourth Proportional to 21,141.06, 29,173.53 and 11,580.45

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Solution

The fourth proportional to 21,141.06, 29,173.53 and 11,580.45 is: 15,980.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.06 : 29,173.53 = 11,580.45 : x
  2. Step 2: Convert to fraction form
    21,141.06/29,173.53 = 11,580.45/x
  3. Step 3: Cross multiply
    21,141.06x = 29,173.53 × 11,580.45
  4. Step 4: Simplify right side
    21,141.06x = 337,842,605.49
  5. Step 5: Solve for x
    x = 337,842,605.49/21,141.06
  6. Step 6: Final answer
    x = 15,980.40

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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.