Home / 21,425.39-29,569.67-12,932.39

Finding the Fourth Proportional to 21,425.39, 29,569.67 and 12,932.39

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Solution

The fourth proportional to 21,425.39, 29,569.67 and 12,932.39 is: 17,848.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,425.39 : 29,569.67 = 12,932.39 : x
  2. Step 2: Convert to fraction form
    21,425.39/29,569.67 = 12,932.39/x
  3. Step 3: Cross multiply
    21,425.39x = 29,569.67 × 12,932.39
  4. Step 4: Simplify right side
    21,425.39x = 382,406,389.09
  5. Step 5: Solve for x
    x = 382,406,389.09/21,425.39
  6. Step 6: Final answer
    x = 17,848.29

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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.