Home / 21,478.16-29,628.41-12,522.39

Finding the Fourth Proportional to 21,478.16, 29,628.41 and 12,522.39

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Solution

The fourth proportional to 21,478.16, 29,628.41 and 12,522.39 is: 17,274.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.16 : 29,628.41 = 12,522.39 : x
  2. Step 2: Convert to fraction form
    21,478.16/29,628.41 = 12,522.39/x
  3. Step 3: Cross multiply
    21,478.16x = 29,628.41 × 12,522.39
  4. Step 4: Simplify right side
    21,478.16x = 371,018,505.10
  5. Step 5: Solve for x
    x = 371,018,505.10/21,478.16
  6. Step 6: Final answer
    x = 17,274.22

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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.