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Finding the Fourth Proportional to 15,140.28, 22,700.22 and 7,738.68

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Solution

The fourth proportional to 15,140.28, 22,700.22 and 7,738.68 is: 11,602.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.28 : 22,700.22 = 7,738.68 : x
  2. Step 2: Convert to fraction form
    15,140.28/22,700.22 = 7,738.68/x
  3. Step 3: Cross multiply
    15,140.28x = 22,700.22 × 7,738.68
  4. Step 4: Simplify right side
    15,140.28x = 175,669,738.51
  5. Step 5: Solve for x
    x = 175,669,738.51/15,140.28
  6. Step 6: Final answer
    x = 11,602.81

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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.