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Finding the Fourth Proportional to 28,712.37, 43,065.13 and 7,653.99

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Solution

The fourth proportional to 28,712.37, 43,065.13 and 7,653.99 is: 11,480.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.37 : 43,065.13 = 7,653.99 : x
  2. Step 2: Convert to fraction form
    28,712.37/43,065.13 = 7,653.99/x
  3. Step 3: Cross multiply
    28,712.37x = 43,065.13 × 7,653.99
  4. Step 4: Simplify right side
    28,712.37x = 329,619,988.84
  5. Step 5: Solve for x
    x = 329,619,988.84/28,712.37
  6. Step 6: Final answer
    x = 11,480.07

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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.