Home / 22,230.99-30,678.35-12,158.91

Finding the Fourth Proportional to 22,230.99, 30,678.35 and 12,158.91

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Solution

The fourth proportional to 22,230.99, 30,678.35 and 12,158.91 is: 16,779.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,230.99 : 30,678.35 = 12,158.91 : x
  2. Step 2: Convert to fraction form
    22,230.99/30,678.35 = 12,158.91/x
  3. Step 3: Cross multiply
    22,230.99x = 30,678.35 × 12,158.91
  4. Step 4: Simplify right side
    22,230.99x = 373,015,235.80
  5. Step 5: Solve for x
    x = 373,015,235.80/22,230.99
  6. Step 6: Final answer
    x = 16,779.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.