Home / 15,813.66-21,772.89-13,923.93

Finding the Fourth Proportional to 15,813.66, 21,772.89 and 13,923.93

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Solution

The fourth proportional to 15,813.66, 21,772.89 and 13,923.93 is: 19,171.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.66 : 21,772.89 = 13,923.93 : x
  2. Step 2: Convert to fraction form
    15,813.66/21,772.89 = 13,923.93/x
  3. Step 3: Cross multiply
    15,813.66x = 21,772.89 × 13,923.93
  4. Step 4: Simplify right side
    15,813.66x = 303,164,196.26
  5. Step 5: Solve for x
    x = 303,164,196.26/15,813.66
  6. Step 6: Final answer
    x = 19,171.03

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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.