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Finding the Fourth Proportional to 21,235.26, 31,852.95 and 5,652.89

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Solution

The fourth proportional to 21,235.26, 31,852.95 and 5,652.89 is: 8,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.26 : 31,852.95 = 5,652.89 : x
  2. Step 2: Convert to fraction form
    21,235.26/31,852.95 = 5,652.89/x
  3. Step 3: Cross multiply
    21,235.26x = 31,852.95 × 5,652.89
  4. Step 4: Simplify right side
    21,235.26x = 180,061,161.51
  5. Step 5: Solve for x
    x = 180,061,161.51/21,235.26
  6. Step 6: Final answer
    x = 8,479.35

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Double scale
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Similar ratio
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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.