Home / 27,779.27-38,327.78-15,838.25

Finding the Fourth Proportional to 27,779.27, 38,327.78 and 15,838.25

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Solution

The fourth proportional to 27,779.27, 38,327.78 and 15,838.25 is: 21,852.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.27 : 38,327.78 = 15,838.25 : x
  2. Step 2: Convert to fraction form
    27,779.27/38,327.78 = 15,838.25/x
  3. Step 3: Cross multiply
    27,779.27x = 38,327.78 × 15,838.25
  4. Step 4: Simplify right side
    27,779.27x = 607,044,690.75
  5. Step 5: Solve for x
    x = 607,044,690.75/27,779.27
  6. Step 6: Final answer
    x = 21,852.44

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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.