Home / 30,692.68-42,358.66-18,115.08

Finding the Fourth Proportional to 30,692.68, 42,358.66 and 18,115.08

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Solution

The fourth proportional to 30,692.68, 42,358.66 and 18,115.08 is: 25,000.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,692.68 : 42,358.66 = 18,115.08 : x
  2. Step 2: Convert to fraction form
    30,692.68/42,358.66 = 18,115.08/x
  3. Step 3: Cross multiply
    30,692.68x = 42,358.66 × 18,115.08
  4. Step 4: Simplify right side
    30,692.68x = 767,330,514.59
  5. Step 5: Solve for x
    x = 767,330,514.59/30,692.68
  6. Step 6: Final answer
    x = 25,000.44

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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.