Home / 18,971.58-26,165.98-12,166.25

Finding the Fourth Proportional to 18,971.58, 26,165.98 and 12,166.25

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Solution

The fourth proportional to 18,971.58, 26,165.98 and 12,166.25 is: 16,779.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.58 : 26,165.98 = 12,166.25 : x
  2. Step 2: Convert to fraction form
    18,971.58/26,165.98 = 12,166.25/x
  3. Step 3: Cross multiply
    18,971.58x = 26,165.98 × 12,166.25
  4. Step 4: Simplify right side
    18,971.58x = 318,341,854.18
  5. Step 5: Solve for x
    x = 318,341,854.18/18,971.58
  6. Step 6: Final answer
    x = 16,779.93

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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.