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Finding the Fourth Proportional to 38,663.49, 57,986.14 and 21,803.75

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Solution

The fourth proportional to 38,663.49, 57,986.14 and 21,803.75 is: 32,700.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,663.49 : 57,986.14 = 21,803.75 : x
  2. Step 2: Convert to fraction form
    38,663.49/57,986.14 = 21,803.75/x
  3. Step 3: Cross multiply
    38,663.49x = 57,986.14 × 21,803.75
  4. Step 4: Simplify right side
    38,663.49x = 1,264,315,300.03
  5. Step 5: Solve for x
    x = 1,264,315,300.03/38,663.49
  6. Step 6: Final answer
    x = 32,700.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.