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Finding the Fourth Proportional to 25,641.33, 35,401.08 and 19,661.49

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Solution

The fourth proportional to 25,641.33, 35,401.08 and 19,661.49 is: 27,145.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,641.33 : 35,401.08 = 19,661.49 : x
  2. Step 2: Convert to fraction form
    25,641.33/35,401.08 = 19,661.49/x
  3. Step 3: Cross multiply
    25,641.33x = 35,401.08 × 19,661.49
  4. Step 4: Simplify right side
    25,641.33x = 696,037,980.41
  5. Step 5: Solve for x
    x = 696,037,980.41/25,641.33
  6. Step 6: Final answer
    x = 27,145.16

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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.