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Finding the Fourth Proportional to 14,918.15, 20,565.28 and 10,427.92

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Solution

The fourth proportional to 14,918.15, 20,565.28 and 10,427.92 is: 14,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,918.15 : 20,565.28 = 10,427.92 : x
  2. Step 2: Convert to fraction form
    14,918.15/20,565.28 = 10,427.92/x
  3. Step 3: Cross multiply
    14,918.15x = 20,565.28 × 10,427.92
  4. Step 4: Simplify right side
    14,918.15x = 214,453,094.62
  5. Step 5: Solve for x
    x = 214,453,094.62/14,918.15
  6. Step 6: Final answer
    x = 14,375.31

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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.