Home / 15,858.36-21,884.69-8,784.93

Finding the Fourth Proportional to 15,858.36, 21,884.69 and 8,784.93

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Solution

The fourth proportional to 15,858.36, 21,884.69 and 8,784.93 is: 12,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.36 : 21,884.69 = 8,784.93 : x
  2. Step 2: Convert to fraction form
    15,858.36/21,884.69 = 8,784.93/x
  3. Step 3: Cross multiply
    15,858.36x = 21,884.69 × 8,784.93
  4. Step 4: Simplify right side
    15,858.36x = 192,255,469.72
  5. Step 5: Solve for x
    x = 192,255,469.72/15,858.36
  6. Step 6: Final answer
    x = 12,123.29

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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.