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Finding the Fourth Proportional to 18,649.20, 27,955.98 and 6,959.28

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Solution

The fourth proportional to 18,649.20, 27,955.98 and 6,959.28 is: 10,432.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.20 : 27,955.98 = 6,959.28 : x
  2. Step 2: Convert to fraction form
    18,649.20/27,955.98 = 6,959.28/x
  3. Step 3: Cross multiply
    18,649.20x = 27,955.98 × 6,959.28
  4. Step 4: Simplify right side
    18,649.20x = 194,553,492.49
  5. Step 5: Solve for x
    x = 194,553,492.49/18,649.20
  6. Step 6: Final answer
    x = 10,432.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.