Home / 20,321.61-28,045.89-12,364.44

Finding the Fourth Proportional to 20,321.61, 28,045.89 and 12,364.44

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Solution

The fourth proportional to 20,321.61, 28,045.89 and 12,364.44 is: 17,064.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.61 : 28,045.89 = 12,364.44 : x
  2. Step 2: Convert to fraction form
    20,321.61/28,045.89 = 12,364.44/x
  3. Step 3: Cross multiply
    20,321.61x = 28,045.89 × 12,364.44
  4. Step 4: Simplify right side
    20,321.61x = 346,771,724.15
  5. Step 5: Solve for x
    x = 346,771,724.15/20,321.61
  6. Step 6: Final answer
    x = 17,064.19

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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.