Home / 22,739.99-31,383.49-12,670.07

Finding the Fourth Proportional to 22,739.99, 31,383.49 and 12,670.07

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Solution

The fourth proportional to 22,739.99, 31,383.49 and 12,670.07 is: 17,485.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,739.99 : 31,383.49 = 12,670.07 : x
  2. Step 2: Convert to fraction form
    22,739.99/31,383.49 = 12,670.07/x
  3. Step 3: Cross multiply
    22,739.99x = 31,383.49 × 12,670.07
  4. Step 4: Simplify right side
    22,739.99x = 397,630,968.36
  5. Step 5: Solve for x
    x = 397,630,968.36/22,739.99
  6. Step 6: Final answer
    x = 17,485.98

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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.