Home / 21,807.93-30,097.68-12,379.53

Finding the Fourth Proportional to 21,807.93, 30,097.68 and 12,379.53

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Solution

The fourth proportional to 21,807.93, 30,097.68 and 12,379.53 is: 17,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,807.93 : 30,097.68 = 12,379.53 : x
  2. Step 2: Convert to fraction form
    21,807.93/30,097.68 = 12,379.53/x
  3. Step 3: Cross multiply
    21,807.93x = 30,097.68 × 12,379.53
  4. Step 4: Simplify right side
    21,807.93x = 372,595,132.49
  5. Step 5: Solve for x
    x = 372,595,132.49/21,807.93
  6. Step 6: Final answer
    x = 17,085.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.