Home / 21,751.08-30,006.54-12,799.32

Finding the Fourth Proportional to 21,751.08, 30,006.54 and 12,799.32

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Solution

The fourth proportional to 21,751.08, 30,006.54 and 12,799.32 is: 17,657.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.08 : 30,006.54 = 12,799.32 : x
  2. Step 2: Convert to fraction form
    21,751.08/30,006.54 = 12,799.32/x
  3. Step 3: Cross multiply
    21,751.08x = 30,006.54 × 12,799.32
  4. Step 4: Simplify right side
    21,751.08x = 384,063,307.55
  5. Step 5: Solve for x
    x = 384,063,307.55/21,751.08
  6. Step 6: Final answer
    x = 17,657.21

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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.