Home / 15,445.32-21,314.39-8,639.26

Finding the Fourth Proportional to 15,445.32, 21,314.39 and 8,639.26

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Solution

The fourth proportional to 15,445.32, 21,314.39 and 8,639.26 is: 11,922.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.32 : 21,314.39 = 8,639.26 : x
  2. Step 2: Convert to fraction form
    15,445.32/21,314.39 = 8,639.26/x
  3. Step 3: Cross multiply
    15,445.32x = 21,314.39 × 8,639.26
  4. Step 4: Simplify right side
    15,445.32x = 184,140,492.87
  5. Step 5: Solve for x
    x = 184,140,492.87/15,445.32
  6. Step 6: Final answer
    x = 11,922.09

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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.