Home / 21,100.51-31,653.81-7,056.35

Finding the Fourth Proportional to 21,100.51, 31,653.81 and 7,056.35

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Solution

The fourth proportional to 21,100.51, 31,653.81 and 7,056.35 is: 10,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,100.51 : 31,653.81 = 7,056.35 : x
  2. Step 2: Convert to fraction form
    21,100.51/31,653.81 = 7,056.35/x
  3. Step 3: Cross multiply
    21,100.51x = 31,653.81 × 7,056.35
  4. Step 4: Simplify right side
    21,100.51x = 223,360,203.92
  5. Step 5: Solve for x
    x = 223,360,203.92/21,100.51
  6. Step 6: Final answer
    x = 10,585.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.