Home / 39,738.40-54,838.08-21,588.88

Finding the Fourth Proportional to 39,738.40, 54,838.08 and 21,588.88

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Solution

The fourth proportional to 39,738.40, 54,838.08 and 21,588.88 is: 29,792.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,738.40 : 54,838.08 = 21,588.88 : x
  2. Step 2: Convert to fraction form
    39,738.40/54,838.08 = 21,588.88/x
  3. Step 3: Cross multiply
    39,738.40x = 54,838.08 × 21,588.88
  4. Step 4: Simplify right side
    39,738.40x = 1,183,892,728.55
  5. Step 5: Solve for x
    x = 1,183,892,728.55/39,738.40
  6. Step 6: Final answer
    x = 29,792.16

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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.