Home / 15,707.59-21,675.80-8,633.99

Finding the Fourth Proportional to 15,707.59, 21,675.80 and 8,633.99

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Solution

The fourth proportional to 15,707.59, 21,675.80 and 8,633.99 is: 11,914.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.59 : 21,675.80 = 8,633.99 : x
  2. Step 2: Convert to fraction form
    15,707.59/21,675.80 = 8,633.99/x
  3. Step 3: Cross multiply
    15,707.59x = 21,675.80 × 8,633.99
  4. Step 4: Simplify right side
    15,707.59x = 187,148,716.22
  5. Step 5: Solve for x
    x = 187,148,716.22/15,707.59
  6. Step 6: Final answer
    x = 11,914.54

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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.