Home / 18,312.30-25,271-9,928.80

Finding the Fourth Proportional to 18,312.30, 25,271 and 9,928.80

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Solution

The fourth proportional to 18,312.30, 25,271 and 9,928.80 is: 13,701.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.30 : 25,271 = 9,928.80 : x
  2. Step 2: Convert to fraction form
    18,312.30/25,271 = 9,928.80/x
  3. Step 3: Cross multiply
    18,312.30x = 25,271 × 9,928.80
  4. Step 4: Simplify right side
    18,312.30x = 250,910,704.80
  5. Step 5: Solve for x
    x = 250,910,704.80/18,312.30
  6. Step 6: Final answer
    x = 13,701.76

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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.