Home / 15,640.34-21,583.60-8,926.04

Finding the Fourth Proportional to 15,640.34, 21,583.60 and 8,926.04

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Solution

The fourth proportional to 15,640.34, 21,583.60 and 8,926.04 is: 12,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.34 : 21,583.60 = 8,926.04 : x
  2. Step 2: Convert to fraction form
    15,640.34/21,583.60 = 8,926.04/x
  3. Step 3: Cross multiply
    15,640.34x = 21,583.60 × 8,926.04
  4. Step 4: Simplify right side
    15,640.34x = 192,656,108.59
  5. Step 5: Solve for x
    x = 192,656,108.59/15,640.34
  6. Step 6: Final answer
    x = 12,317.90

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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.