Home / 43,640.09-65,460.15-12,475.34

Finding the Fourth Proportional to 43,640.09, 65,460.15 and 12,475.34

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Solution

The fourth proportional to 43,640.09, 65,460.15 and 12,475.34 is: 18,713.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,640.09 : 65,460.15 = 12,475.34 : x
  2. Step 2: Convert to fraction form
    43,640.09/65,460.15 = 12,475.34/x
  3. Step 3: Cross multiply
    43,640.09x = 65,460.15 × 12,475.34
  4. Step 4: Simplify right side
    43,640.09x = 816,637,627.70
  5. Step 5: Solve for x
    x = 816,637,627.70/43,640.09
  6. Step 6: Final answer
    x = 18,713.01

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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.