Home / 15,657.75-21,619.04-10,078.47

Finding the Fourth Proportional to 15,657.75, 21,619.04 and 10,078.47

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Solution

The fourth proportional to 15,657.75, 21,619.04 and 10,078.47 is: 13,915.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.75 : 21,619.04 = 10,078.47 : x
  2. Step 2: Convert to fraction form
    15,657.75/21,619.04 = 10,078.47/x
  3. Step 3: Cross multiply
    15,657.75x = 21,619.04 × 10,078.47
  4. Step 4: Simplify right side
    15,657.75x = 217,886,795.68
  5. Step 5: Solve for x
    x = 217,886,795.68/15,657.75
  6. Step 6: Final answer
    x = 13,915.59

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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.