Home / 25,499.60-38,077.70-20,828.94

Finding the Fourth Proportional to 25,499.60, 38,077.70 and 20,828.94

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Solution

The fourth proportional to 25,499.60, 38,077.70 and 20,828.94 is: 31,103.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,499.60 : 38,077.70 = 20,828.94 : x
  2. Step 2: Convert to fraction form
    25,499.60/38,077.70 = 20,828.94/x
  3. Step 3: Cross multiply
    25,499.60x = 38,077.70 × 20,828.94
  4. Step 4: Simplify right side
    25,499.60x = 793,118,128.64
  5. Step 5: Solve for x
    x = 793,118,128.64/25,499.60
  6. Step 6: Final answer
    x = 31,103.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.