Home / 30,679.61-42,345.38-18,752.95

Finding the Fourth Proportional to 30,679.61, 42,345.38 and 18,752.95

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Solution

The fourth proportional to 30,679.61, 42,345.38 and 18,752.95 is: 25,883.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,679.61 : 42,345.38 = 18,752.95 : x
  2. Step 2: Convert to fraction form
    30,679.61/42,345.38 = 18,752.95/x
  3. Step 3: Cross multiply
    30,679.61x = 42,345.38 × 18,752.95
  4. Step 4: Simplify right side
    30,679.61x = 794,100,734.89
  5. Step 5: Solve for x
    x = 794,100,734.89/30,679.61
  6. Step 6: Final answer
    x = 25,883.66

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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.