Home / 27,779.08-38,320.80-18,823.52

Finding the Fourth Proportional to 27,779.08, 38,320.80 and 18,823.52

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Solution

The fourth proportional to 27,779.08, 38,320.80 and 18,823.52 is: 25,966.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.08 : 38,320.80 = 18,823.52 : x
  2. Step 2: Convert to fraction form
    27,779.08/38,320.80 = 18,823.52/x
  3. Step 3: Cross multiply
    27,779.08x = 38,320.80 × 18,823.52
  4. Step 4: Simplify right side
    27,779.08x = 721,332,345.22
  5. Step 5: Solve for x
    x = 721,332,345.22/27,779.08
  6. Step 6: Final answer
    x = 25,966.75

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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.