Home / 21,859.48-30,113.40-17,381.80

Finding the Fourth Proportional to 21,859.48, 30,113.40 and 17,381.80

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Solution

The fourth proportional to 21,859.48, 30,113.40 and 17,381.80 is: 23,944.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,859.48 : 30,113.40 = 17,381.80 : x
  2. Step 2: Convert to fraction form
    21,859.48/30,113.40 = 17,381.80/x
  3. Step 3: Cross multiply
    21,859.48x = 30,113.40 × 17,381.80
  4. Step 4: Simplify right side
    21,859.48x = 523,425,096.12
  5. Step 5: Solve for x
    x = 523,425,096.12/21,859.48
  6. Step 6: Final answer
    x = 23,944.99

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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.