Home / 30,657.90-45,986.85-20,160.30

Finding the Fourth Proportional to 30,657.90, 45,986.85 and 20,160.30

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Solution

The fourth proportional to 30,657.90, 45,986.85 and 20,160.30 is: 30,240.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,657.90 : 45,986.85 = 20,160.30 : x
  2. Step 2: Convert to fraction form
    30,657.90/45,986.85 = 20,160.30/x
  3. Step 3: Cross multiply
    30,657.90x = 45,986.85 × 20,160.30
  4. Step 4: Simplify right side
    30,657.90x = 927,108,692.06
  5. Step 5: Solve for x
    x = 927,108,692.06/30,657.90
  6. Step 6: Final answer
    x = 30,240.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.