Home / 22,021.63-30,389.87-12,590.39

Finding the Fourth Proportional to 22,021.63, 30,389.87 and 12,590.39

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Solution

The fourth proportional to 22,021.63, 30,389.87 and 12,590.39 is: 17,374.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,021.63 : 30,389.87 = 12,590.39 : x
  2. Step 2: Convert to fraction form
    22,021.63/30,389.87 = 12,590.39/x
  3. Step 3: Cross multiply
    22,021.63x = 30,389.87 × 12,590.39
  4. Step 4: Simplify right side
    22,021.63x = 382,620,315.35
  5. Step 5: Solve for x
    x = 382,620,315.35/22,021.63
  6. Step 6: Final answer
    x = 17,374.75

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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.