Home / 43,345.50-65,018.25-12,180.75

Finding the Fourth Proportional to 43,345.50, 65,018.25 and 12,180.75

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Solution

The fourth proportional to 43,345.50, 65,018.25 and 12,180.75 is: 18,271.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,345.50 : 65,018.25 = 12,180.75 : x
  2. Step 2: Convert to fraction form
    43,345.50/65,018.25 = 12,180.75/x
  3. Step 3: Cross multiply
    43,345.50x = 65,018.25 × 12,180.75
  4. Step 4: Simplify right side
    43,345.50x = 791,971,048.69
  5. Step 5: Solve for x
    x = 791,971,048.69/43,345.50
  6. Step 6: Final answer
    x = 18,271.13

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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.