Home / 30,813.08-42,521.34-18,238.04

Finding the Fourth Proportional to 30,813.08, 42,521.34 and 18,238.04

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Solution

The fourth proportional to 30,813.08, 42,521.34 and 18,238.04 is: 25,168.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,813.08 : 42,521.34 = 18,238.04 : x
  2. Step 2: Convert to fraction form
    30,813.08/42,521.34 = 18,238.04/x
  3. Step 3: Cross multiply
    30,813.08x = 42,521.34 × 18,238.04
  4. Step 4: Simplify right side
    30,813.08x = 775,505,899.77
  5. Step 5: Solve for x
    x = 775,505,899.77/30,813.08
  6. Step 6: Final answer
    x = 25,168.07

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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.