Home / 19,423.08-29,085.21-12,839.40

Finding the Fourth Proportional to 19,423.08, 29,085.21 and 12,839.40

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Solution

The fourth proportional to 19,423.08, 29,085.21 and 12,839.40 is: 19,226.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,423.08 : 29,085.21 = 12,839.40 : x
  2. Step 2: Convert to fraction form
    19,423.08/29,085.21 = 12,839.40/x
  3. Step 3: Cross multiply
    19,423.08x = 29,085.21 × 12,839.40
  4. Step 4: Simplify right side
    19,423.08x = 373,436,645.27
  5. Step 5: Solve for x
    x = 373,436,645.27/19,423.08
  6. Step 6: Final answer
    x = 19,226.44

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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.