Home / 28,779.15-39,721.35-19,342.24

Finding the Fourth Proportional to 28,779.15, 39,721.35 and 19,342.24

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Solution

The fourth proportional to 28,779.15, 39,721.35 and 19,342.24 is: 26,696.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.15 : 39,721.35 = 19,342.24 : x
  2. Step 2: Convert to fraction form
    28,779.15/39,721.35 = 19,342.24/x
  3. Step 3: Cross multiply
    28,779.15x = 39,721.35 × 19,342.24
  4. Step 4: Simplify right side
    28,779.15x = 768,299,884.82
  5. Step 5: Solve for x
    x = 768,299,884.82/28,779.15
  6. Step 6: Final answer
    x = 26,696.41

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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.