Home / 28,738.84-43,113.12-13,157.68

Finding the Fourth Proportional to 28,738.84, 43,113.12 and 13,157.68

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Solution

The fourth proportional to 28,738.84, 43,113.12 and 13,157.68 is: 19,738.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.84 : 43,113.12 = 13,157.68 : x
  2. Step 2: Convert to fraction form
    28,738.84/43,113.12 = 13,157.68/x
  3. Step 3: Cross multiply
    28,738.84x = 43,113.12 × 13,157.68
  4. Step 4: Simplify right side
    28,738.84x = 567,268,636.76
  5. Step 5: Solve for x
    x = 567,268,636.76/28,738.84
  6. Step 6: Final answer
    x = 19,738.75

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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.