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Finding the Fourth Proportional to 10,642.36, 14,673.18 and 6,859

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Solution

The fourth proportional to 10,642.36, 14,673.18 and 6,859 is: 9,456.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,642.36 : 14,673.18 = 6,859 : x
  2. Step 2: Convert to fraction form
    10,642.36/14,673.18 = 6,859/x
  3. Step 3: Cross multiply
    10,642.36x = 14,673.18 × 6,859
  4. Step 4: Simplify right side
    10,642.36x = 100,643,341.62
  5. Step 5: Solve for x
    x = 100,643,341.62/10,642.36
  6. Step 6: Final answer
    x = 9,456.86

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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.