Home / 30,700.21-42,263.91-29,289.58

Finding the Fourth Proportional to 30,700.21, 42,263.91 and 29,289.58

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Solution

The fourth proportional to 30,700.21, 42,263.91 and 29,289.58 is: 40,321.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,700.21 : 42,263.91 = 29,289.58 : x
  2. Step 2: Convert to fraction form
    30,700.21/42,263.91 = 29,289.58/x
  3. Step 3: Cross multiply
    30,700.21x = 42,263.91 × 29,289.58
  4. Step 4: Simplify right side
    30,700.21x = 1,237,892,173.06
  5. Step 5: Solve for x
    x = 1,237,892,173.06/30,700.21
  6. Step 6: Final answer
    x = 40,321.94

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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.