Home / 30,962.36-42,763.20-20,873.36

Finding the Fourth Proportional to 30,962.36, 42,763.20 and 20,873.36

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Solution

The fourth proportional to 30,962.36, 42,763.20 and 20,873.36 is: 28,828.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,962.36 : 42,763.20 = 20,873.36 : x
  2. Step 2: Convert to fraction form
    30,962.36/42,763.20 = 20,873.36/x
  3. Step 3: Cross multiply
    30,962.36x = 42,763.20 × 20,873.36
  4. Step 4: Simplify right side
    30,962.36x = 892,611,668.35
  5. Step 5: Solve for x
    x = 892,611,668.35/30,962.36
  6. Step 6: Final answer
    x = 28,828.93

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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.