Home / 28,715.06-43,069.16-7,656.68

Finding the Fourth Proportional to 28,715.06, 43,069.16 and 7,656.68

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Solution

The fourth proportional to 28,715.06, 43,069.16 and 7,656.68 is: 11,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.06 : 43,069.16 = 7,656.68 : x
  2. Step 2: Convert to fraction form
    28,715.06/43,069.16 = 7,656.68/x
  3. Step 3: Cross multiply
    28,715.06x = 43,069.16 × 7,656.68
  4. Step 4: Simplify right side
    28,715.06x = 329,766,579.78
  5. Step 5: Solve for x
    x = 329,766,579.78/28,715.06
  6. Step 6: Final answer
    x = 11,484.10

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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.