Home / 18,215.48-25,135.50-13,438.02

Finding the Fourth Proportional to 18,215.48, 25,135.50 and 13,438.02

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Solution

The fourth proportional to 18,215.48, 25,135.50 and 13,438.02 is: 18,543.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.48 : 25,135.50 = 13,438.02 : x
  2. Step 2: Convert to fraction form
    18,215.48/25,135.50 = 13,438.02/x
  3. Step 3: Cross multiply
    18,215.48x = 25,135.50 × 13,438.02
  4. Step 4: Simplify right side
    18,215.48x = 337,771,351.71
  5. Step 5: Solve for x
    x = 337,771,351.71/18,215.48
  6. Step 6: Final answer
    x = 18,543.09

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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.