Home / 43,381.40-65,074.36-12,219.08

Finding the Fourth Proportional to 43,381.40, 65,074.36 and 12,219.08

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Solution

The fourth proportional to 43,381.40, 65,074.36 and 12,219.08 is: 18,329.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,381.40 : 65,074.36 = 12,219.08 : x
  2. Step 2: Convert to fraction form
    43,381.40/65,074.36 = 12,219.08/x
  3. Step 3: Cross multiply
    43,381.40x = 65,074.36 × 12,219.08
  4. Step 4: Simplify right side
    43,381.40x = 795,148,810.79
  5. Step 5: Solve for x
    x = 795,148,810.79/43,381.40
  6. Step 6: Final answer
    x = 18,329.26

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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.