Home / 14,723.92-20,319.64-8,436.32

Finding the Fourth Proportional to 14,723.92, 20,319.64 and 8,436.32

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Solution

The fourth proportional to 14,723.92, 20,319.64 and 8,436.32 is: 11,642.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,723.92 : 20,319.64 = 8,436.32 : x
  2. Step 2: Convert to fraction form
    14,723.92/20,319.64 = 8,436.32/x
  3. Step 3: Cross multiply
    14,723.92x = 20,319.64 × 8,436.32
  4. Step 4: Simplify right side
    14,723.92x = 171,422,985.32
  5. Step 5: Solve for x
    x = 171,422,985.32/14,723.92
  6. Step 6: Final answer
    x = 11,642.48

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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.