Home / 21,110.63-31,824.08-19,683.68

Finding the Fourth Proportional to 21,110.63, 31,824.08 and 19,683.68

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Solution

The fourth proportional to 21,110.63, 31,824.08 and 19,683.68 is: 29,672.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.63 : 31,824.08 = 19,683.68 : x
  2. Step 2: Convert to fraction form
    21,110.63/31,824.08 = 19,683.68/x
  3. Step 3: Cross multiply
    21,110.63x = 31,824.08 × 19,683.68
  4. Step 4: Simplify right side
    21,110.63x = 626,414,749.48
  5. Step 5: Solve for x
    x = 626,414,749.48/21,110.63
  6. Step 6: Final answer
    x = 29,672.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.