Home / 27,779.76-38,336.86-15,205.32

Finding the Fourth Proportional to 27,779.76, 38,336.86 and 15,205.32

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Solution

The fourth proportional to 27,779.76, 38,336.86 and 15,205.32 is: 20,983.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.76 : 38,336.86 = 15,205.32 : x
  2. Step 2: Convert to fraction form
    27,779.76/38,336.86 = 15,205.32/x
  3. Step 3: Cross multiply
    27,779.76x = 38,336.86 × 15,205.32
  4. Step 4: Simplify right side
    27,779.76x = 582,924,224.10
  5. Step 5: Solve for x
    x = 582,924,224.10/27,779.76
  6. Step 6: Final answer
    x = 20,983.77

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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.