Home / 18,670.83-25,730.30-13,356.42

Finding the Fourth Proportional to 18,670.83, 25,730.30 and 13,356.42

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Solution

The fourth proportional to 18,670.83, 25,730.30 and 13,356.42 is: 18,406.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670.83 : 25,730.30 = 13,356.42 : x
  2. Step 2: Convert to fraction form
    18,670.83/25,730.30 = 13,356.42/x
  3. Step 3: Cross multiply
    18,670.83x = 25,730.30 × 13,356.42
  4. Step 4: Simplify right side
    18,670.83x = 343,664,498.09
  5. Step 5: Solve for x
    x = 343,664,498.09/18,670.83
  6. Step 6: Final answer
    x = 18,406.50

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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.