Home / 18,638.06-25,724.16-10,685.60

Finding the Fourth Proportional to 18,638.06, 25,724.16 and 10,685.60

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Solution

The fourth proportional to 18,638.06, 25,724.16 and 10,685.60 is: 14,748.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.06 : 25,724.16 = 10,685.60 : x
  2. Step 2: Convert to fraction form
    18,638.06/25,724.16 = 10,685.60/x
  3. Step 3: Cross multiply
    18,638.06x = 25,724.16 × 10,685.60
  4. Step 4: Simplify right side
    18,638.06x = 274,878,084.10
  5. Step 5: Solve for x
    x = 274,878,084.10/18,638.06
  6. Step 6: Final answer
    x = 14,748.21

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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.