Home / 12,505.69-18,758.53-5,012.64

Finding the Fourth Proportional to 12,505.69, 18,758.53 and 5,012.64

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Solution

The fourth proportional to 12,505.69, 18,758.53 and 5,012.64 is: 7,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.69 : 18,758.53 = 5,012.64 : x
  2. Step 2: Convert to fraction form
    12,505.69/18,758.53 = 5,012.64/x
  3. Step 3: Cross multiply
    12,505.69x = 18,758.53 × 5,012.64
  4. Step 4: Simplify right side
    12,505.69x = 94,029,638.96
  5. Step 5: Solve for x
    x = 94,029,638.96/12,505.69
  6. Step 6: Final answer
    x = 7,518.95

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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.