Home / 30,509.99-42,099.36-17,078.77

Finding the Fourth Proportional to 30,509.99, 42,099.36 and 17,078.77

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Solution

The fourth proportional to 30,509.99, 42,099.36 and 17,078.77 is: 23,566.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,509.99 : 42,099.36 = 17,078.77 : x
  2. Step 2: Convert to fraction form
    30,509.99/42,099.36 = 17,078.77/x
  3. Step 3: Cross multiply
    30,509.99x = 42,099.36 × 17,078.77
  4. Step 4: Simplify right side
    30,509.99x = 719,005,286.59
  5. Step 5: Solve for x
    x = 719,005,286.59/30,509.99
  6. Step 6: Final answer
    x = 23,566.22

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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.