Home / 18,405.21-25,398.31-10,446.35

Finding the Fourth Proportional to 18,405.21, 25,398.31 and 10,446.35

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Solution

The fourth proportional to 18,405.21, 25,398.31 and 10,446.35 is: 14,415.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.21 : 25,398.31 = 10,446.35 : x
  2. Step 2: Convert to fraction form
    18,405.21/25,398.31 = 10,446.35/x
  3. Step 3: Cross multiply
    18,405.21x = 25,398.31 × 10,446.35
  4. Step 4: Simplify right side
    18,405.21x = 265,319,635.67
  5. Step 5: Solve for x
    x = 265,319,635.67/18,405.21
  6. Step 6: Final answer
    x = 14,415.46

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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.