Home / 25,485.12-38,159.16-20,785.74

Finding the Fourth Proportional to 25,485.12, 38,159.16 and 20,785.74

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Solution

The fourth proportional to 25,485.12, 38,159.16 and 20,785.74 is: 31,122.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,485.12 : 38,159.16 = 20,785.74 : x
  2. Step 2: Convert to fraction form
    25,485.12/38,159.16 = 20,785.74/x
  3. Step 3: Cross multiply
    25,485.12x = 38,159.16 × 20,785.74
  4. Step 4: Simplify right side
    25,485.12x = 793,166,378.38
  5. Step 5: Solve for x
    x = 793,166,378.38/25,485.12
  6. Step 6: Final answer
    x = 31,122.72

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