Home / 15,890.65-21,929.43-8,817.53

Finding the Fourth Proportional to 15,890.65, 21,929.43 and 8,817.53

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Solution

The fourth proportional to 15,890.65, 21,929.43 and 8,817.53 is: 12,168.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.65 : 21,929.43 = 8,817.53 : x
  2. Step 2: Convert to fraction form
    15,890.65/21,929.43 = 8,817.53/x
  3. Step 3: Cross multiply
    15,890.65x = 21,929.43 × 8,817.53
  4. Step 4: Simplify right side
    15,890.65x = 193,363,330.33
  5. Step 5: Solve for x
    x = 193,363,330.33/15,890.65
  6. Step 6: Final answer
    x = 12,168.37

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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.