Home / 21,292.41-29,383.56-12,345.12

Finding the Fourth Proportional to 21,292.41, 29,383.56 and 12,345.12

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Solution

The fourth proportional to 21,292.41, 29,383.56 and 12,345.12 is: 17,036.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.41 : 29,383.56 = 12,345.12 : x
  2. Step 2: Convert to fraction form
    21,292.41/29,383.56 = 12,345.12/x
  3. Step 3: Cross multiply
    21,292.41x = 29,383.56 × 12,345.12
  4. Step 4: Simplify right side
    21,292.41x = 362,743,574.23
  5. Step 5: Solve for x
    x = 362,743,574.23/21,292.41
  6. Step 6: Final answer
    x = 17,036.29

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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.