Home / 43,403.12-65,109.89-15,317.38

Finding the Fourth Proportional to 43,403.12, 65,109.89 and 15,317.38

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Solution

The fourth proportional to 43,403.12, 65,109.89 and 15,317.38 is: 22,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,403.12 : 65,109.89 = 15,317.38 : x
  2. Step 2: Convert to fraction form
    43,403.12/65,109.89 = 15,317.38/x
  3. Step 3: Cross multiply
    43,403.12x = 65,109.89 × 15,317.38
  4. Step 4: Simplify right side
    43,403.12x = 997,312,601.34
  5. Step 5: Solve for x
    x = 997,312,601.34/43,403.12
  6. Step 6: Final answer
    x = 22,977.90

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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.