Home / 43,480.14-65,220.22-12,315.40

Finding the Fourth Proportional to 43,480.14, 65,220.22 and 12,315.40

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Solution

The fourth proportional to 43,480.14, 65,220.22 and 12,315.40 is: 18,473.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,480.14 : 65,220.22 = 12,315.40 : x
  2. Step 2: Convert to fraction form
    43,480.14/65,220.22 = 12,315.40/x
  3. Step 3: Cross multiply
    43,480.14x = 65,220.22 × 12,315.40
  4. Step 4: Simplify right side
    43,480.14x = 803,213,097.39
  5. Step 5: Solve for x
    x = 803,213,097.39/43,480.14
  6. Step 6: Final answer
    x = 18,473.10

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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.