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Finding the Fourth Proportional to 38,312, 52,871.36 and 21,546.24

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Solution

The fourth proportional to 38,312, 52,871.36 and 21,546.24 is: 29,734.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,312 : 52,871.36 = 21,546.24 : x
  2. Step 2: Convert to fraction form
    38,312/52,871.36 = 21,546.24/x
  3. Step 3: Cross multiply
    38,312x = 52,871.36 × 21,546.24
  4. Step 4: Simplify right side
    38,312x = 1,139,179,011.69
  5. Step 5: Solve for x
    x = 1,139,179,011.69/38,312
  6. Step 6: Final answer
    x = 29,734.26

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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.