Home / 30,012.40-41,444.76-20,105.20

Finding the Fourth Proportional to 30,012.40, 41,444.76 and 20,105.20

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Solution

The fourth proportional to 30,012.40, 41,444.76 and 20,105.20 is: 27,763.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,012.40 : 41,444.76 = 20,105.20 : x
  2. Step 2: Convert to fraction form
    30,012.40/41,444.76 = 20,105.20/x
  3. Step 3: Cross multiply
    30,012.40x = 41,444.76 × 20,105.20
  4. Step 4: Simplify right side
    30,012.40x = 833,255,188.75
  5. Step 5: Solve for x
    x = 833,255,188.75/30,012.40
  6. Step 6: Final answer
    x = 27,763.70

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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.