Home / 25,353.76-37,847.72-21,421.60

Finding the Fourth Proportional to 25,353.76, 37,847.72 and 21,421.60

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Solution

The fourth proportional to 25,353.76, 37,847.72 and 21,421.60 is: 31,977.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,353.76 : 37,847.72 = 21,421.60 : x
  2. Step 2: Convert to fraction form
    25,353.76/37,847.72 = 21,421.60/x
  3. Step 3: Cross multiply
    25,353.76x = 37,847.72 × 21,421.60
  4. Step 4: Simplify right side
    25,353.76x = 810,758,718.75
  5. Step 5: Solve for x
    x = 810,758,718.75/25,353.76
  6. Step 6: Final answer
    x = 31,977.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.