Home / 30,926.39-42,679.04-18,985.37

Finding the Fourth Proportional to 30,926.39, 42,679.04 and 18,985.37

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Solution

The fourth proportional to 30,926.39, 42,679.04 and 18,985.37 is: 26,200.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.39 : 42,679.04 = 18,985.37 : x
  2. Step 2: Convert to fraction form
    30,926.39/42,679.04 = 18,985.37/x
  3. Step 3: Cross multiply
    30,926.39x = 42,679.04 × 18,985.37
  4. Step 4: Simplify right side
    30,926.39x = 810,277,057.32
  5. Step 5: Solve for x
    x = 810,277,057.32/30,926.39
  6. Step 6: Final answer
    x = 26,200.19

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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.