Home / 27,678.02-38,196.51-15,743.08

Finding the Fourth Proportional to 27,678.02, 38,196.51 and 15,743.08

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Solution

The fourth proportional to 27,678.02, 38,196.51 and 15,743.08 is: 21,725.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,678.02 : 38,196.51 = 15,743.08 : x
  2. Step 2: Convert to fraction form
    27,678.02/38,196.51 = 15,743.08/x
  3. Step 3: Cross multiply
    27,678.02x = 38,196.51 × 15,743.08
  4. Step 4: Simplify right side
    27,678.02x = 601,330,712.65
  5. Step 5: Solve for x
    x = 601,330,712.65/27,678.02
  6. Step 6: Final answer
    x = 21,725.93

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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.