Home / 30,111.47-41,568.28-21,166.64

Finding the Fourth Proportional to 30,111.47, 41,568.28 and 21,166.64

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Solution

The fourth proportional to 30,111.47, 41,568.28 and 21,166.64 is: 29,220.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,111.47 : 41,568.28 = 21,166.64 : x
  2. Step 2: Convert to fraction form
    30,111.47/41,568.28 = 21,166.64/x
  3. Step 3: Cross multiply
    30,111.47x = 41,568.28 × 21,166.64
  4. Step 4: Simplify right side
    30,111.47x = 879,860,869.18
  5. Step 5: Solve for x
    x = 879,860,869.18/30,111.47
  6. Step 6: Final answer
    x = 29,220.12

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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.