Home / 15,640.62-21,586.53-10,278.60

Finding the Fourth Proportional to 15,640.62, 21,586.53 and 10,278.60

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Solution

The fourth proportional to 15,640.62, 21,586.53 and 10,278.60 is: 14,186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,640.62 : 21,586.53 = 10,278.60 : x
  2. Step 2: Convert to fraction form
    15,640.62/21,586.53 = 10,278.60/x
  3. Step 3: Cross multiply
    15,640.62x = 21,586.53 × 10,278.60
  4. Step 4: Simplify right side
    15,640.62x = 221,879,178.13
  5. Step 5: Solve for x
    x = 221,879,178.13/15,640.62
  6. Step 6: Final answer
    x = 14,186.09

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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.