Home / 30,586.09-42,211.80-18,656.41

Finding the Fourth Proportional to 30,586.09, 42,211.80 and 18,656.41

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Solution

The fourth proportional to 30,586.09, 42,211.80 and 18,656.41 is: 25,747.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,586.09 : 42,211.80 = 18,656.41 : x
  2. Step 2: Convert to fraction form
    30,586.09/42,211.80 = 18,656.41/x
  3. Step 3: Cross multiply
    30,586.09x = 42,211.80 × 18,656.41
  4. Step 4: Simplify right side
    30,586.09x = 787,520,647.64
  5. Step 5: Solve for x
    x = 787,520,647.64/30,586.09
  6. Step 6: Final answer
    x = 25,747.67

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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.