Home / 19,021.93-28,539.65-8,490.99

Finding the Fourth Proportional to 19,021.93, 28,539.65 and 8,490.99

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Solution

The fourth proportional to 19,021.93, 28,539.65 and 8,490.99 is: 12,739.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.93 : 28,539.65 = 8,490.99 : x
  2. Step 2: Convert to fraction form
    19,021.93/28,539.65 = 8,490.99/x
  3. Step 3: Cross multiply
    19,021.93x = 28,539.65 × 8,490.99
  4. Step 4: Simplify right side
    19,021.93x = 242,329,882.75
  5. Step 5: Solve for x
    x = 242,329,882.75/19,021.93
  6. Step 6: Final answer
    x = 12,739.50

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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.