Home / 18,821.76-25,973.60-10,438.40

Finding the Fourth Proportional to 18,821.76, 25,973.60 and 10,438.40

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Solution

The fourth proportional to 18,821.76, 25,973.60 and 10,438.40 is: 14,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.76 : 25,973.60 = 10,438.40 : x
  2. Step 2: Convert to fraction form
    18,821.76/25,973.60 = 10,438.40/x
  3. Step 3: Cross multiply
    18,821.76x = 25,973.60 × 10,438.40
  4. Step 4: Simplify right side
    18,821.76x = 271,122,826.24
  5. Step 5: Solve for x
    x = 271,122,826.24/18,821.76
  6. Step 6: Final answer
    x = 14,404.75

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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.