Home / 21,343.53-31,984.77-15,676.74

Finding the Fourth Proportional to 21,343.53, 31,984.77 and 15,676.74

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Solution

The fourth proportional to 21,343.53, 31,984.77 and 15,676.74 is: 23,492.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.53 : 31,984.77 = 15,676.74 : x
  2. Step 2: Convert to fraction form
    21,343.53/31,984.77 = 15,676.74/x
  3. Step 3: Cross multiply
    21,343.53x = 31,984.77 × 15,676.74
  4. Step 4: Simplify right side
    21,343.53x = 501,416,923.25
  5. Step 5: Solve for x
    x = 501,416,923.25/21,343.53
  6. Step 6: Final answer
    x = 23,492.69

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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.