Home / 18,705.42-28,058.14-12,477.60

Finding the Fourth Proportional to 18,705.42, 28,058.14 and 12,477.60

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Solution

The fourth proportional to 18,705.42, 28,058.14 and 12,477.60 is: 18,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.42 : 28,058.14 = 12,477.60 : x
  2. Step 2: Convert to fraction form
    18,705.42/28,058.14 = 12,477.60/x
  3. Step 3: Cross multiply
    18,705.42x = 28,058.14 × 12,477.60
  4. Step 4: Simplify right side
    18,705.42x = 350,098,274.22
  5. Step 5: Solve for x
    x = 350,098,274.22/18,705.42
  6. Step 6: Final answer
    x = 18,716.40

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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.