Home / 30,985.05-42,759.37-16,837.89

Finding the Fourth Proportional to 30,985.05, 42,759.37 and 16,837.89

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Solution

The fourth proportional to 30,985.05, 42,759.37 and 16,837.89 is: 23,236.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.05 : 42,759.37 = 16,837.89 : x
  2. Step 2: Convert to fraction form
    30,985.05/42,759.37 = 16,837.89/x
  3. Step 3: Cross multiply
    30,985.05x = 42,759.37 × 16,837.89
  4. Step 4: Simplify right side
    30,985.05x = 719,977,575.04
  5. Step 5: Solve for x
    x = 719,977,575.04/30,985.05
  6. Step 6: Final answer
    x = 23,236.29

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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.