Home / 30,454.90-42,025.44-18,516.58

Finding the Fourth Proportional to 30,454.90, 42,025.44 and 18,516.58

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Solution

The fourth proportional to 30,454.90, 42,025.44 and 18,516.58 is: 25,551.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,454.90 : 42,025.44 = 18,516.58 : x
  2. Step 2: Convert to fraction form
    30,454.90/42,025.44 = 18,516.58/x
  3. Step 3: Cross multiply
    30,454.90x = 42,025.44 × 18,516.58
  4. Step 4: Simplify right side
    30,454.90x = 778,167,421.80
  5. Step 5: Solve for x
    x = 778,167,421.80/30,454.90
  6. Step 6: Final answer
    x = 25,551.47

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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.