Home / 30,438.24-42,006.93-18,499.26

Finding the Fourth Proportional to 30,438.24, 42,006.93 and 18,499.26

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Solution

The fourth proportional to 30,438.24, 42,006.93 and 18,499.26 is: 25,530.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.24 : 42,006.93 = 18,499.26 : x
  2. Step 2: Convert to fraction form
    30,438.24/42,006.93 = 18,499.26/x
  3. Step 3: Cross multiply
    30,438.24x = 42,006.93 × 18,499.26
  4. Step 4: Simplify right side
    30,438.24x = 777,097,119.87
  5. Step 5: Solve for x
    x = 777,097,119.87/30,438.24
  6. Step 6: Final answer
    x = 25,530.29

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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.