Home / 21,176.42-31,762.40-8,697.76

Finding the Fourth Proportional to 21,176.42, 31,762.40 and 8,697.76

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Solution

The fourth proportional to 21,176.42, 31,762.40 and 8,697.76 is: 13,045.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.42 : 31,762.40 = 8,697.76 : x
  2. Step 2: Convert to fraction form
    21,176.42/31,762.40 = 8,697.76/x
  3. Step 3: Cross multiply
    21,176.42x = 31,762.40 × 8,697.76
  4. Step 4: Simplify right side
    21,176.42x = 276,261,609.33
  5. Step 5: Solve for x
    x = 276,261,609.33/21,176.42
  6. Step 6: Final answer
    x = 13,045.72

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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.