Home / 21,590.50-29,794.98-12,159.22

Finding the Fourth Proportional to 21,590.50, 29,794.98 and 12,159.22

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Solution

The fourth proportional to 21,590.50, 29,794.98 and 12,159.22 is: 16,779.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,590.50 : 29,794.98 = 12,159.22 : x
  2. Step 2: Convert to fraction form
    21,590.50/29,794.98 = 12,159.22/x
  3. Step 3: Cross multiply
    21,590.50x = 29,794.98 × 12,159.22
  4. Step 4: Simplify right side
    21,590.50x = 362,283,716.72
  5. Step 5: Solve for x
    x = 362,283,716.72/21,590.50
  6. Step 6: Final answer
    x = 16,779.77

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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.