Home / 15,707.05-21,675.15-8,633.41

Finding the Fourth Proportional to 15,707.05, 21,675.15 and 8,633.41

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Solution

The fourth proportional to 15,707.05, 21,675.15 and 8,633.41 is: 11,913.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,707.05 : 21,675.15 = 8,633.41 : x
  2. Step 2: Convert to fraction form
    15,707.05/21,675.15 = 8,633.41/x
  3. Step 3: Cross multiply
    15,707.05x = 21,675.15 × 8,633.41
  4. Step 4: Simplify right side
    15,707.05x = 187,130,402.57
  5. Step 5: Solve for x
    x = 187,130,402.57/15,707.05
  6. Step 6: Final answer
    x = 11,913.79

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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.