Home / 19,968.12-27,569.16-12,425.40

Finding the Fourth Proportional to 19,968.12, 27,569.16 and 12,425.40

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Solution

The fourth proportional to 19,968.12, 27,569.16 and 12,425.40 is: 17,155.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,968.12 : 27,569.16 = 12,425.40 : x
  2. Step 2: Convert to fraction form
    19,968.12/27,569.16 = 12,425.40/x
  3. Step 3: Cross multiply
    19,968.12x = 27,569.16 × 12,425.40
  4. Step 4: Simplify right side
    19,968.12x = 342,557,840.66
  5. Step 5: Solve for x
    x = 342,557,840.66/19,968.12
  6. Step 6: Final answer
    x = 17,155.24

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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.