Home / 21,379.37-29,503.57-11,947.93

Finding the Fourth Proportional to 21,379.37, 29,503.57 and 11,947.93

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Solution

The fourth proportional to 21,379.37, 29,503.57 and 11,947.93 is: 16,488.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.37 : 29,503.57 = 11,947.93 : x
  2. Step 2: Convert to fraction form
    21,379.37/29,503.57 = 11,947.93/x
  3. Step 3: Cross multiply
    21,379.37x = 29,503.57 × 11,947.93
  4. Step 4: Simplify right side
    21,379.37x = 352,506,485.48
  5. Step 5: Solve for x
    x = 352,506,485.48/21,379.37
  6. Step 6: Final answer
    x = 16,488.16

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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.