Home / 22,739.15-31,378.11-12,665.99

Finding the Fourth Proportional to 22,739.15, 31,378.11 and 12,665.99

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Solution

The fourth proportional to 22,739.15, 31,378.11 and 12,665.99 is: 17,478.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,739.15 : 31,378.11 = 12,665.99 : x
  2. Step 2: Convert to fraction form
    22,739.15/31,378.11 = 12,665.99/x
  3. Step 3: Cross multiply
    22,739.15x = 31,378.11 × 12,665.99
  4. Step 4: Simplify right side
    22,739.15x = 397,434,827.48
  5. Step 5: Solve for x
    x = 397,434,827.48/22,739.15
  6. Step 6: Final answer
    x = 17,478.00

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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.