Home / 12,986.57-19,497.86-6,665.93

Finding the Fourth Proportional to 12,986.57, 19,497.86 and 6,665.93

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Solution

The fourth proportional to 12,986.57, 19,497.86 and 6,665.93 is: 10,008.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.57 : 19,497.86 = 6,665.93 : x
  2. Step 2: Convert to fraction form
    12,986.57/19,497.86 = 6,665.93/x
  3. Step 3: Cross multiply
    12,986.57x = 19,497.86 × 6,665.93
  4. Step 4: Simplify right side
    12,986.57x = 129,971,239.09
  5. Step 5: Solve for x
    x = 129,971,239.09/12,986.57
  6. Step 6: Final answer
    x = 10,008.13

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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.