Home / 18,380.56-25,370.95-10,428.07

Finding the Fourth Proportional to 18,380.56, 25,370.95 and 10,428.07

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Solution

The fourth proportional to 18,380.56, 25,370.95 and 10,428.07 is: 14,394.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.56 : 25,370.95 = 10,428.07 : x
  2. Step 2: Convert to fraction form
    18,380.56/25,370.95 = 10,428.07/x
  3. Step 3: Cross multiply
    18,380.56x = 25,370.95 × 10,428.07
  4. Step 4: Simplify right side
    18,380.56x = 264,570,042.57
  5. Step 5: Solve for x
    x = 264,570,042.57/18,380.56
  6. Step 6: Final answer
    x = 14,394.01

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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.