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Finding the Fourth Proportional to 15,706.68, 21,675.04 and 8,632.95

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Solution

The fourth proportional to 15,706.68, 21,675.04 and 8,632.95 is: 11,913.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,706.68 : 21,675.04 = 8,632.95 : x
  2. Step 2: Convert to fraction form
    15,706.68/21,675.04 = 8,632.95/x
  3. Step 3: Cross multiply
    15,706.68x = 21,675.04 × 8,632.95
  4. Step 4: Simplify right side
    15,706.68x = 187,119,536.57
  5. Step 5: Solve for x
    x = 187,119,536.57/15,706.68
  6. Step 6: Final answer
    x = 11,913.37

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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.