Home / 21,379.46-29,500.35-11,946.20

Finding the Fourth Proportional to 21,379.46, 29,500.35 and 11,946.20

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Solution

The fourth proportional to 21,379.46, 29,500.35 and 11,946.20 is: 16,483.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.46 : 29,500.35 = 11,946.20 : x
  2. Step 2: Convert to fraction form
    21,379.46/29,500.35 = 11,946.20/x
  3. Step 3: Cross multiply
    21,379.46x = 29,500.35 × 11,946.20
  4. Step 4: Simplify right side
    21,379.46x = 352,417,081.17
  5. Step 5: Solve for x
    x = 352,417,081.17/21,379.46
  6. Step 6: Final answer
    x = 16,483.91

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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.