Home / 21,331.17-31,783.43-19,003.23

Finding the Fourth Proportional to 21,331.17, 31,783.43 and 19,003.23

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Solution

The fourth proportional to 21,331.17, 31,783.43 and 19,003.23 is: 28,314.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,331.17 : 31,783.43 = 19,003.23 : x
  2. Step 2: Convert to fraction form
    21,331.17/31,783.43 = 19,003.23/x
  3. Step 3: Cross multiply
    21,331.17x = 31,783.43 × 19,003.23
  4. Step 4: Simplify right side
    21,331.17x = 603,987,877.99
  5. Step 5: Solve for x
    x = 603,987,877.99/21,331.17
  6. Step 6: Final answer
    x = 28,314.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.