Home / 18,271.06-25,214.16-9,887.56

Finding the Fourth Proportional to 18,271.06, 25,214.16 and 9,887.56

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Solution

The fourth proportional to 18,271.06, 25,214.16 and 9,887.56 is: 13,644.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.06 : 25,214.16 = 9,887.56 : x
  2. Step 2: Convert to fraction form
    18,271.06/25,214.16 = 9,887.56/x
  3. Step 3: Cross multiply
    18,271.06x = 25,214.16 × 9,887.56
  4. Step 4: Simplify right side
    18,271.06x = 249,306,519.85
  5. Step 5: Solve for x
    x = 249,306,519.85/18,271.06
  6. Step 6: Final answer
    x = 13,644.89

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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.