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Finding the Fourth Proportional to 37,990.99, 52,427.55 and 21,223.99

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Solution

The fourth proportional to 37,990.99, 52,427.55 and 21,223.99 is: 29,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,990.99 : 52,427.55 = 21,223.99 : x
  2. Step 2: Convert to fraction form
    37,990.99/52,427.55 = 21,223.99/x
  3. Step 3: Cross multiply
    37,990.99x = 52,427.55 × 21,223.99
  4. Step 4: Simplify right side
    37,990.99x = 1,112,721,796.92
  5. Step 5: Solve for x
    x = 1,112,721,796.92/37,990.99
  6. Step 6: Final answer
    x = 29,289.10

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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.