Home / 28,569.62-42,852.80-7,791.50

Finding the Fourth Proportional to 28,569.62, 42,852.80 and 7,791.50

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Solution

The fourth proportional to 28,569.62, 42,852.80 and 7,791.50 is: 11,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.62 : 42,852.80 = 7,791.50 : x
  2. Step 2: Convert to fraction form
    28,569.62/42,852.80 = 7,791.50/x
  3. Step 3: Cross multiply
    28,569.62x = 42,852.80 × 7,791.50
  4. Step 4: Simplify right side
    28,569.62x = 333,887,591.20
  5. Step 5: Solve for x
    x = 333,887,591.20/28,569.62
  6. Step 6: Final answer
    x = 11,686.81

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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.