Home / 30,458.78-42,046.07-18,525.95

Finding the Fourth Proportional to 30,458.78, 42,046.07 and 18,525.95

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Solution

The fourth proportional to 30,458.78, 42,046.07 and 18,525.95 is: 25,573.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,458.78 : 42,046.07 = 18,525.95 : x
  2. Step 2: Convert to fraction form
    30,458.78/42,046.07 = 18,525.95/x
  3. Step 3: Cross multiply
    30,458.78x = 42,046.07 × 18,525.95
  4. Step 4: Simplify right side
    30,458.78x = 778,943,390.52
  5. Step 5: Solve for x
    x = 778,943,390.52/30,458.78
  6. Step 6: Final answer
    x = 25,573.69

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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.