Home / 30,629.04-42,271.99-18,689.84

Finding the Fourth Proportional to 30,629.04, 42,271.99 and 18,689.84

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Solution

The fourth proportional to 30,629.04, 42,271.99 and 18,689.84 is: 25,794.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,629.04 : 42,271.99 = 18,689.84 : x
  2. Step 2: Convert to fraction form
    30,629.04/42,271.99 = 18,689.84/x
  3. Step 3: Cross multiply
    30,629.04x = 42,271.99 × 18,689.84
  4. Step 4: Simplify right side
    30,629.04x = 790,056,729.58
  5. Step 5: Solve for x
    x = 790,056,729.58/30,629.04
  6. Step 6: Final answer
    x = 25,794.37

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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.