Home / 16,779.52-23,153.82-13,421.11

Finding the Fourth Proportional to 16,779.52, 23,153.82 and 13,421.11

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Solution

The fourth proportional to 16,779.52, 23,153.82 and 13,421.11 is: 18,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,779.52 : 23,153.82 = 13,421.11 : x
  2. Step 2: Convert to fraction form
    16,779.52/23,153.82 = 13,421.11/x
  3. Step 3: Cross multiply
    16,779.52x = 23,153.82 × 13,421.11
  4. Step 4: Simplify right side
    16,779.52x = 310,749,965.14
  5. Step 5: Solve for x
    x = 310,749,965.14/16,779.52
  6. Step 6: Final answer
    x = 18,519.60

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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.