Home / 18,960.22-28,417.28-13,415.16

Finding the Fourth Proportional to 18,960.22, 28,417.28 and 13,415.16

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Solution

The fourth proportional to 18,960.22, 28,417.28 and 13,415.16 is: 20,106.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.22 : 28,417.28 = 13,415.16 : x
  2. Step 2: Convert to fraction form
    18,960.22/28,417.28 = 13,415.16/x
  3. Step 3: Cross multiply
    18,960.22x = 28,417.28 × 13,415.16
  4. Step 4: Simplify right side
    18,960.22x = 381,222,397.45
  5. Step 5: Solve for x
    x = 381,222,397.45/18,960.22
  6. Step 6: Final answer
    x = 20,106.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.