Home / 20,270.59-27,970.74-11,316.65

Finding the Fourth Proportional to 20,270.59, 27,970.74 and 11,316.65

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Solution

The fourth proportional to 20,270.59, 27,970.74 and 11,316.65 is: 15,615.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.59 : 27,970.74 = 11,316.65 : x
  2. Step 2: Convert to fraction form
    20,270.59/27,970.74 = 11,316.65/x
  3. Step 3: Cross multiply
    20,270.59x = 27,970.74 × 11,316.65
  4. Step 4: Simplify right side
    20,270.59x = 316,534,934.97
  5. Step 5: Solve for x
    x = 316,534,934.97/20,270.59
  6. Step 6: Final answer
    x = 15,615.48

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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.