Home / 22,628.40-31,116.47-19,639.05

Finding the Fourth Proportional to 22,628.40, 31,116.47 and 19,639.05

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Solution

The fourth proportional to 22,628.40, 31,116.47 and 19,639.05 is: 27,005.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,628.40 : 31,116.47 = 19,639.05 : x
  2. Step 2: Convert to fraction form
    22,628.40/31,116.47 = 19,639.05/x
  3. Step 3: Cross multiply
    22,628.40x = 31,116.47 × 19,639.05
  4. Step 4: Simplify right side
    22,628.40x = 611,097,811.96
  5. Step 5: Solve for x
    x = 611,097,811.96/22,628.40
  6. Step 6: Final answer
    x = 27,005.79

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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.