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Finding the Fourth Proportional to 38,173.70, 52,679.71 and 21,406.70

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Solution

The fourth proportional to 38,173.70, 52,679.71 and 21,406.70 is: 29,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,173.70 : 52,679.71 = 21,406.70 : x
  2. Step 2: Convert to fraction form
    38,173.70/52,679.71 = 21,406.70/x
  3. Step 3: Cross multiply
    38,173.70x = 52,679.71 × 21,406.70
  4. Step 4: Simplify right side
    38,173.70x = 1,127,698,511.42
  5. Step 5: Solve for x
    x = 1,127,698,511.42/38,173.70
  6. Step 6: Final answer
    x = 29,541.25

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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.