Home / 18,312.09-25,271.18-10,355.50

Finding the Fourth Proportional to 18,312.09, 25,271.18 and 10,355.50

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Solution

The fourth proportional to 18,312.09, 25,271.18 and 10,355.50 is: 14,290.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.09 : 25,271.18 = 10,355.50 : x
  2. Step 2: Convert to fraction form
    18,312.09/25,271.18 = 10,355.50/x
  3. Step 3: Cross multiply
    18,312.09x = 25,271.18 × 10,355.50
  4. Step 4: Simplify right side
    18,312.09x = 261,695,704.49
  5. Step 5: Solve for x
    x = 261,695,704.49/18,312.09
  6. Step 6: Final answer
    x = 14,290.87

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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.