Home / 28,699.95-43,053.15-7,640.81

Finding the Fourth Proportional to 28,699.95, 43,053.15 and 7,640.81

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Solution

The fourth proportional to 28,699.95, 43,053.15 and 7,640.81 is: 11,462.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,699.95 : 43,053.15 = 7,640.81 : x
  2. Step 2: Convert to fraction form
    28,699.95/43,053.15 = 7,640.81/x
  3. Step 3: Cross multiply
    28,699.95x = 43,053.15 × 7,640.81
  4. Step 4: Simplify right side
    28,699.95x = 328,960,728.33
  5. Step 5: Solve for x
    x = 328,960,728.33/28,699.95
  6. Step 6: Final answer
    x = 11,462.07

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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.