Home / 20,851.60-31,314.72-19,182.76

Finding the Fourth Proportional to 20,851.60, 31,314.72 and 19,182.76

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Solution

The fourth proportional to 20,851.60, 31,314.72 and 19,182.76 is: 28,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.60 : 31,314.72 = 19,182.76 : x
  2. Step 2: Convert to fraction form
    20,851.60/31,314.72 = 19,182.76/x
  3. Step 3: Cross multiply
    20,851.60x = 31,314.72 × 19,182.76
  4. Step 4: Simplify right side
    20,851.60x = 600,702,758.23
  5. Step 5: Solve for x
    x = 600,702,758.23/20,851.60
  6. Step 6: Final answer
    x = 28,808.47

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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.