Home / 15,639.37-21,580.36-12,460.74

Finding the Fourth Proportional to 15,639.37, 21,580.36 and 12,460.74

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Solution

The fourth proportional to 15,639.37, 21,580.36 and 12,460.74 is: 17,194.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.37 : 21,580.36 = 12,460.74 : x
  2. Step 2: Convert to fraction form
    15,639.37/21,580.36 = 12,460.74/x
  3. Step 3: Cross multiply
    15,639.37x = 21,580.36 × 12,460.74
  4. Step 4: Simplify right side
    15,639.37x = 268,907,255.07
  5. Step 5: Solve for x
    x = 268,907,255.07/15,639.37
  6. Step 6: Final answer
    x = 17,194.25

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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.