Home / 18,722.03-25,830.15-12,351.78

Finding the Fourth Proportional to 18,722.03, 25,830.15 and 12,351.78

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Solution

The fourth proportional to 18,722.03, 25,830.15 and 12,351.78 is: 17,041.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.03 : 25,830.15 = 12,351.78 : x
  2. Step 2: Convert to fraction form
    18,722.03/25,830.15 = 12,351.78/x
  3. Step 3: Cross multiply
    18,722.03x = 25,830.15 × 12,351.78
  4. Step 4: Simplify right side
    18,722.03x = 319,048,330.17
  5. Step 5: Solve for x
    x = 319,048,330.17/18,722.03
  6. Step 6: Final answer
    x = 17,041.34

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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.