Home / 30,427.28-41,989.80-16,999.10

Finding the Fourth Proportional to 30,427.28, 41,989.80 and 16,999.10

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Solution

The fourth proportional to 30,427.28, 41,989.80 and 16,999.10 is: 23,458.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,427.28 : 41,989.80 = 16,999.10 : x
  2. Step 2: Convert to fraction form
    30,427.28/41,989.80 = 16,999.10/x
  3. Step 3: Cross multiply
    30,427.28x = 41,989.80 × 16,999.10
  4. Step 4: Simplify right side
    30,427.28x = 713,788,809.18
  5. Step 5: Solve for x
    x = 713,788,809.18/30,427.28
  6. Step 6: Final answer
    x = 23,458.84

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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.