Home / 30,985.06-42,758.22-16,837.60

Finding the Fourth Proportional to 30,985.06, 42,758.22 and 16,837.60

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Solution

The fourth proportional to 30,985.06, 42,758.22 and 16,837.60 is: 23,235.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.06 : 42,758.22 = 16,837.60 : x
  2. Step 2: Convert to fraction form
    30,985.06/42,758.22 = 16,837.60/x
  3. Step 3: Cross multiply
    30,985.06x = 42,758.22 × 16,837.60
  4. Step 4: Simplify right side
    30,985.06x = 719,945,805.07
  5. Step 5: Solve for x
    x = 719,945,805.07/30,985.06
  6. Step 6: Final answer
    x = 23,235.26

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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.