Home / 21,433.14-29,578.80-12,935.13

Finding the Fourth Proportional to 21,433.14, 29,578.80 and 12,935.13

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Solution

The fourth proportional to 21,433.14, 29,578.80 and 12,935.13 is: 17,851.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.14 : 29,578.80 = 12,935.13 : x
  2. Step 2: Convert to fraction form
    21,433.14/29,578.80 = 12,935.13/x
  3. Step 3: Cross multiply
    21,433.14x = 29,578.80 × 12,935.13
  4. Step 4: Simplify right side
    21,433.14x = 382,605,623.24
  5. Step 5: Solve for x
    x = 382,605,623.24/21,433.14
  6. Step 6: Final answer
    x = 17,851.12

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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.