Home / 43,681.72-65,511.75-18,718.94

Finding the Fourth Proportional to 43,681.72, 65,511.75 and 18,718.94

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Solution

The fourth proportional to 43,681.72, 65,511.75 and 18,718.94 is: 28,073.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,681.72 : 65,511.75 = 18,718.94 : x
  2. Step 2: Convert to fraction form
    43,681.72/65,511.75 = 18,718.94/x
  3. Step 3: Cross multiply
    43,681.72x = 65,511.75 × 18,718.94
  4. Step 4: Simplify right side
    43,681.72x = 1,226,310,189.99
  5. Step 5: Solve for x
    x = 1,226,310,189.99/43,681.72
  6. Step 6: Final answer
    x = 28,073.76

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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.