Home / 21,270.84-29,355.48-11,840.10

Finding the Fourth Proportional to 21,270.84, 29,355.48 and 11,840.10

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Solution

The fourth proportional to 21,270.84, 29,355.48 and 11,840.10 is: 16,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.84 : 29,355.48 = 11,840.10 : x
  2. Step 2: Convert to fraction form
    21,270.84/29,355.48 = 11,840.10/x
  3. Step 3: Cross multiply
    21,270.84x = 29,355.48 × 11,840.10
  4. Step 4: Simplify right side
    21,270.84x = 347,571,818.75
  5. Step 5: Solve for x
    x = 347,571,818.75/21,270.84
  6. Step 6: Final answer
    x = 16,340.30

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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.