Home / 21,219.70-29,313.06-20,098.68

Finding the Fourth Proportional to 21,219.70, 29,313.06 and 20,098.68

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Solution

The fourth proportional to 21,219.70, 29,313.06 and 20,098.68 is: 27,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,219.70 : 29,313.06 = 20,098.68 : x
  2. Step 2: Convert to fraction form
    21,219.70/29,313.06 = 20,098.68/x
  3. Step 3: Cross multiply
    21,219.70x = 29,313.06 × 20,098.68
  4. Step 4: Simplify right side
    21,219.70x = 589,153,812.76
  5. Step 5: Solve for x
    x = 589,153,812.76/21,219.70
  6. Step 6: Final answer
    x = 27,764.47

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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.