Home / 39,585.32-54,627.18-21,680.32

Finding the Fourth Proportional to 39,585.32, 54,627.18 and 21,680.32

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Solution

The fourth proportional to 39,585.32, 54,627.18 and 21,680.32 is: 29,918.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,585.32 : 54,627.18 = 21,680.32 : x
  2. Step 2: Convert to fraction form
    39,585.32/54,627.18 = 21,680.32/x
  3. Step 3: Cross multiply
    39,585.32x = 54,627.18 × 21,680.32
  4. Step 4: Simplify right side
    39,585.32x = 1,184,334,656.94
  5. Step 5: Solve for x
    x = 1,184,334,656.94/39,585.32
  6. Step 6: Final answer
    x = 29,918.53

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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.