Home / 20,907.63-31,360.32-15,291.09

Finding the Fourth Proportional to 20,907.63, 31,360.32 and 15,291.09

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Solution

The fourth proportional to 20,907.63, 31,360.32 and 15,291.09 is: 22,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,907.63 : 31,360.32 = 15,291.09 : x
  2. Step 2: Convert to fraction form
    20,907.63/31,360.32 = 15,291.09/x
  3. Step 3: Cross multiply
    20,907.63x = 31,360.32 × 15,291.09
  4. Step 4: Simplify right side
    20,907.63x = 479,533,475.55
  5. Step 5: Solve for x
    x = 479,533,475.55/20,907.63
  6. Step 6: Final answer
    x = 22,935.81

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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.