Home / 21,643.54-29,868.46-12,697.48

Finding the Fourth Proportional to 21,643.54, 29,868.46 and 12,697.48

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Solution

The fourth proportional to 21,643.54, 29,868.46 and 12,697.48 is: 17,522.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,643.54 : 29,868.46 = 12,697.48 : x
  2. Step 2: Convert to fraction form
    21,643.54/29,868.46 = 12,697.48/x
  3. Step 3: Cross multiply
    21,643.54x = 29,868.46 × 12,697.48
  4. Step 4: Simplify right side
    21,643.54x = 379,254,173.48
  5. Step 5: Solve for x
    x = 379,254,173.48/21,643.54
  6. Step 6: Final answer
    x = 17,522.74

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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.