Home / 25,661.54-35,429.10-19,681.70

Finding the Fourth Proportional to 25,661.54, 35,429.10 and 19,681.70

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Solution

The fourth proportional to 25,661.54, 35,429.10 and 19,681.70 is: 27,173.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,661.54 : 35,429.10 = 19,681.70 : x
  2. Step 2: Convert to fraction form
    25,661.54/35,429.10 = 19,681.70/x
  3. Step 3: Cross multiply
    25,661.54x = 35,429.10 × 19,681.70
  4. Step 4: Simplify right side
    25,661.54x = 697,304,917.47
  5. Step 5: Solve for x
    x = 697,304,917.47/25,661.54
  6. Step 6: Final answer
    x = 27,173.15

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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.