Home / 12,986.62-19,480.86-4,666.70

Finding the Fourth Proportional to 12,986.62, 19,480.86 and 4,666.70

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Solution

The fourth proportional to 12,986.62, 19,480.86 and 4,666.70 is: 7,000.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.62 : 19,480.86 = 4,666.70 : x
  2. Step 2: Convert to fraction form
    12,986.62/19,480.86 = 4,666.70/x
  3. Step 3: Cross multiply
    12,986.62x = 19,480.86 × 4,666.70
  4. Step 4: Simplify right side
    12,986.62x = 90,911,378.06
  5. Step 5: Solve for x
    x = 90,911,378.06/12,986.62
  6. Step 6: Final answer
    x = 7,000.39

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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.