Home / 19,678.37-29,524.60-8,428.99

Finding the Fourth Proportional to 19,678.37, 29,524.60 and 8,428.99

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Solution

The fourth proportional to 19,678.37, 29,524.60 and 8,428.99 is: 12,646.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.37 : 29,524.60 = 8,428.99 : x
  2. Step 2: Convert to fraction form
    19,678.37/29,524.60 = 8,428.99/x
  3. Step 3: Cross multiply
    19,678.37x = 29,524.60 × 8,428.99
  4. Step 4: Simplify right side
    19,678.37x = 248,862,494.88
  5. Step 5: Solve for x
    x = 248,862,494.88/19,678.37
  6. Step 6: Final answer
    x = 12,646.50

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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.