Home / 28,631.80-42,956.64-12,850.06

Finding the Fourth Proportional to 28,631.80, 42,956.64 and 12,850.06

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Solution

The fourth proportional to 28,631.80, 42,956.64 and 12,850.06 is: 19,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.80 : 42,956.64 = 12,850.06 : x
  2. Step 2: Convert to fraction form
    28,631.80/42,956.64 = 12,850.06/x
  3. Step 3: Cross multiply
    28,631.80x = 42,956.64 × 12,850.06
  4. Step 4: Simplify right side
    28,631.80x = 551,995,401.40
  5. Step 5: Solve for x
    x = 551,995,401.40/28,631.80
  6. Step 6: Final answer
    x = 19,279.10

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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.