Home / 20,764.63-31,157.34-9,518.74

Finding the Fourth Proportional to 20,764.63, 31,157.34 and 9,518.74

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Solution

The fourth proportional to 20,764.63, 31,157.34 and 9,518.74 is: 14,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.63 : 31,157.34 = 9,518.74 : x
  2. Step 2: Convert to fraction form
    20,764.63/31,157.34 = 9,518.74/x
  3. Step 3: Cross multiply
    20,764.63x = 31,157.34 × 9,518.74
  4. Step 4: Simplify right side
    20,764.63x = 296,578,618.55
  5. Step 5: Solve for x
    x = 296,578,618.55/20,764.63
  6. Step 6: Final answer
    x = 14,282.88

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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.