Home / 30,971.98-46,438.52-20,430.64

Finding the Fourth Proportional to 30,971.98, 46,438.52 and 20,430.64

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Solution

The fourth proportional to 30,971.98, 46,438.52 and 20,430.64 is: 30,633.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.98 : 46,438.52 = 20,430.64 : x
  2. Step 2: Convert to fraction form
    30,971.98/46,438.52 = 20,430.64/x
  3. Step 3: Cross multiply
    30,971.98x = 46,438.52 × 20,430.64
  4. Step 4: Simplify right side
    30,971.98x = 948,768,684.25
  5. Step 5: Solve for x
    x = 948,768,684.25/30,971.98
  6. Step 6: Final answer
    x = 30,633.13

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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.