Home / 21,970.06-30,318.55-11,898.27

Finding the Fourth Proportional to 21,970.06, 30,318.55 and 11,898.27

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Solution

The fourth proportional to 21,970.06, 30,318.55 and 11,898.27 is: 16,419.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,970.06 : 30,318.55 = 11,898.27 : x
  2. Step 2: Convert to fraction form
    21,970.06/30,318.55 = 11,898.27/x
  3. Step 3: Cross multiply
    21,970.06x = 30,318.55 × 11,898.27
  4. Step 4: Simplify right side
    21,970.06x = 360,738,264.16
  5. Step 5: Solve for x
    x = 360,738,264.16/21,970.06
  6. Step 6: Final answer
    x = 16,419.54

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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.