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Finding the Fourth Proportional to 28,013.56, 42,021.06 and 7,237

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Solution

The fourth proportional to 28,013.56, 42,021.06 and 7,237 is: 10,855.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,013.56 : 42,021.06 = 7,237 : x
  2. Step 2: Convert to fraction form
    28,013.56/42,021.06 = 7,237/x
  3. Step 3: Cross multiply
    28,013.56x = 42,021.06 × 7,237
  4. Step 4: Simplify right side
    28,013.56x = 304,106,411.22
  5. Step 5: Solve for x
    x = 304,106,411.22/28,013.56
  6. Step 6: Final answer
    x = 10,855.69

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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.