Home / 27,789.08-38,345.33-15,851.70

Finding the Fourth Proportional to 27,789.08, 38,345.33 and 15,851.70

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Solution

The fourth proportional to 27,789.08, 38,345.33 and 15,851.70 is: 21,873.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.08 : 38,345.33 = 15,851.70 : x
  2. Step 2: Convert to fraction form
    27,789.08/38,345.33 = 15,851.70/x
  3. Step 3: Cross multiply
    27,789.08x = 38,345.33 × 15,851.70
  4. Step 4: Simplify right side
    27,789.08x = 607,838,707.19
  5. Step 5: Solve for x
    x = 607,838,707.19/27,789.08
  6. Step 6: Final answer
    x = 21,873.30

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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.