Home / 12,528.39-18,792.90-4,208.70

Finding the Fourth Proportional to 12,528.39, 18,792.90 and 4,208.70

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Solution

The fourth proportional to 12,528.39, 18,792.90 and 4,208.70 is: 6,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.39 : 18,792.90 = 4,208.70 : x
  2. Step 2: Convert to fraction form
    12,528.39/18,792.90 = 4,208.70/x
  3. Step 3: Cross multiply
    12,528.39x = 18,792.90 × 4,208.70
  4. Step 4: Simplify right side
    12,528.39x = 79,093,678.23
  5. Step 5: Solve for x
    x = 79,093,678.23/12,528.39
  6. Step 6: Final answer
    x = 6,313.16

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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.