Home / 15,707.13-21,675.92-8,634.01

Finding the Fourth Proportional to 15,707.13, 21,675.92 and 8,634.01

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Solution

The fourth proportional to 15,707.13, 21,675.92 and 8,634.01 is: 11,914.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.13 : 21,675.92 = 8,634.01 : x
  2. Step 2: Convert to fraction form
    15,707.13/21,675.92 = 8,634.01/x
  3. Step 3: Cross multiply
    15,707.13x = 21,675.92 × 8,634.01
  4. Step 4: Simplify right side
    15,707.13x = 187,150,101.89
  5. Step 5: Solve for x
    x = 187,150,101.89/15,707.13
  6. Step 6: Final answer
    x = 11,914.98

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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.