Home / 30,430.63-41,992.77-16,999.21

Finding the Fourth Proportional to 30,430.63, 41,992.77 and 16,999.21

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Solution

The fourth proportional to 30,430.63, 41,992.77 and 16,999.21 is: 23,458.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,430.63 : 41,992.77 = 16,999.21 : x
  2. Step 2: Convert to fraction form
    30,430.63/41,992.77 = 16,999.21/x
  3. Step 3: Cross multiply
    30,430.63x = 41,992.77 × 16,999.21
  4. Step 4: Simplify right side
    30,430.63x = 713,843,915.71
  5. Step 5: Solve for x
    x = 713,843,915.71/30,430.63
  6. Step 6: Final answer
    x = 23,458.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.