Home / 18,822.08-25,976-10,438.40

Finding the Fourth Proportional to 18,822.08, 25,976 and 10,438.40

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Solution

The fourth proportional to 18,822.08, 25,976 and 10,438.40 is: 14,405.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.08 : 25,976 = 10,438.40 : x
  2. Step 2: Convert to fraction form
    18,822.08/25,976 = 10,438.40/x
  3. Step 3: Cross multiply
    18,822.08x = 25,976 × 10,438.40
  4. Step 4: Simplify right side
    18,822.08x = 271,147,878.40
  5. Step 5: Solve for x
    x = 271,147,878.40/18,822.08
  6. Step 6: Final answer
    x = 14,405.84

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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.