Home / 22,989.36-31,724.40-12,917.76

Finding the Fourth Proportional to 22,989.36, 31,724.40 and 12,917.76

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Solution

The fourth proportional to 22,989.36, 31,724.40 and 12,917.76 is: 17,825.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,989.36 : 31,724.40 = 12,917.76 : x
  2. Step 2: Convert to fraction form
    22,989.36/31,724.40 = 12,917.76/x
  3. Step 3: Cross multiply
    22,989.36x = 31,724.40 × 12,917.76
  4. Step 4: Simplify right side
    22,989.36x = 409,808,185.34
  5. Step 5: Solve for x
    x = 409,808,185.34/22,989.36
  6. Step 6: Final answer
    x = 17,825.99

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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.