Home / 38,811.60-58,217.40-21,315.60

Finding the Fourth Proportional to 38,811.60, 58,217.40 and 21,315.60

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Solution

The fourth proportional to 38,811.60, 58,217.40 and 21,315.60 is: 31,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,811.60 : 58,217.40 = 21,315.60 : x
  2. Step 2: Convert to fraction form
    38,811.60/58,217.40 = 21,315.60/x
  3. Step 3: Cross multiply
    38,811.60x = 58,217.40 × 21,315.60
  4. Step 4: Simplify right side
    38,811.60x = 1,240,938,811.44
  5. Step 5: Solve for x
    x = 1,240,938,811.44/38,811.60
  6. Step 6: Final answer
    x = 31,973.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.