Home / 12,539.71-18,810.34-4,219.03

Finding the Fourth Proportional to 12,539.71, 18,810.34 and 4,219.03

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Solution

The fourth proportional to 12,539.71, 18,810.34 and 4,219.03 is: 6,328.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,539.71 : 18,810.34 = 4,219.03 : x
  2. Step 2: Convert to fraction form
    12,539.71/18,810.34 = 4,219.03/x
  3. Step 3: Cross multiply
    12,539.71x = 18,810.34 × 4,219.03
  4. Step 4: Simplify right side
    12,539.71x = 79,361,381.09
  5. Step 5: Solve for x
    x = 79,361,381.09/12,539.71
  6. Step 6: Final answer
    x = 6,328.80

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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.