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Finding the Fourth Proportional to 28,047.66, 38,719.80 and 17,440.71

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Solution

The fourth proportional to 28,047.66, 38,719.80 and 17,440.71 is: 24,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,047.66 : 38,719.80 = 17,440.71 : x
  2. Step 2: Convert to fraction form
    28,047.66/38,719.80 = 17,440.71/x
  3. Step 3: Cross multiply
    28,047.66x = 38,719.80 × 17,440.71
  4. Step 4: Simplify right side
    28,047.66x = 675,300,803.06
  5. Step 5: Solve for x
    x = 675,300,803.06/28,047.66
  6. Step 6: Final answer
    x = 24,076.90

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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.