Home / 27,719.69-38,247.51-15,779.89

Finding the Fourth Proportional to 27,719.69, 38,247.51 and 15,779.89

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Solution

The fourth proportional to 27,719.69, 38,247.51 and 15,779.89 is: 21,773.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,719.69 : 38,247.51 = 15,779.89 : x
  2. Step 2: Convert to fraction form
    27,719.69/38,247.51 = 15,779.89/x
  3. Step 3: Cross multiply
    27,719.69x = 38,247.51 × 15,779.89
  4. Step 4: Simplify right side
    27,719.69x = 603,541,404.96
  5. Step 5: Solve for x
    x = 603,541,404.96/27,719.69
  6. Step 6: Final answer
    x = 21,773.02

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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.