Home / 21,379.50-29,503.16-11,948.14

Finding the Fourth Proportional to 21,379.50, 29,503.16 and 11,948.14

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Solution

The fourth proportional to 21,379.50, 29,503.16 and 11,948.14 is: 16,488.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.50 : 29,503.16 = 11,948.14 : x
  2. Step 2: Convert to fraction form
    21,379.50/29,503.16 = 11,948.14/x
  3. Step 3: Cross multiply
    21,379.50x = 29,503.16 × 11,948.14
  4. Step 4: Simplify right side
    21,379.50x = 352,507,886.12
  5. Step 5: Solve for x
    x = 352,507,886.12/21,379.50
  6. Step 6: Final answer
    x = 16,488.13

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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.