Home / 30,428.17-41,985.75-16,999.54

Finding the Fourth Proportional to 30,428.17, 41,985.75 and 16,999.54

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Solution

The fourth proportional to 30,428.17, 41,985.75 and 16,999.54 is: 23,456.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.17 : 41,985.75 = 16,999.54 : x
  2. Step 2: Convert to fraction form
    30,428.17/41,985.75 = 16,999.54/x
  3. Step 3: Cross multiply
    30,428.17x = 41,985.75 × 16,999.54
  4. Step 4: Simplify right side
    30,428.17x = 713,738,141.63
  5. Step 5: Solve for x
    x = 713,738,141.63/30,428.17
  6. Step 6: Final answer
    x = 23,456.49

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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.