Home / 21,271.52-31,907.27-5,688.74

Finding the Fourth Proportional to 21,271.52, 31,907.27 and 5,688.74

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Solution

The fourth proportional to 21,271.52, 31,907.27 and 5,688.74 is: 8,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.52 : 31,907.27 = 5,688.74 : x
  2. Step 2: Convert to fraction form
    21,271.52/31,907.27 = 5,688.74/x
  3. Step 3: Cross multiply
    21,271.52x = 31,907.27 × 5,688.74
  4. Step 4: Simplify right side
    21,271.52x = 181,512,163.14
  5. Step 5: Solve for x
    x = 181,512,163.14/21,271.52
  6. Step 6: Final answer
    x = 8,533.11

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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.