Home / 28,179,442.64-38,911,328.82-21,198,019.22

Finding the Fourth Proportional to 28,179,442.64, 38,911,328.82 and 21,198,019.22

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Solution

The fourth proportional to 28,179,442.64, 38,911,328.82 and 21,198,019.22 is: 29,271,093.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179,442.64 : 38,911,328.82 = 21,198,019.22 : x
  2. Step 2: Convert to fraction form
    28,179,442.64/38,911,328.82 = 21,198,019.22/x
  3. Step 3: Cross multiply
    28,179,442.64x = 38,911,328.82 × 21,198,019.22
  4. Step 4: Simplify right side
    28,179,442.64x = 824,843,096,202,099.88
  5. Step 5: Solve for x
    x = 824,843,096,202,099.88/28,179,442.64
  6. Step 6: Final answer
    x = 29,271,093.35

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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.