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Finding the Fourth Proportional to 25,900.56, 38,807.10 and 20,695.50

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Solution

The fourth proportional to 25,900.56, 38,807.10 and 20,695.50 is: 31,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,900.56 : 38,807.10 = 20,695.50 : x
  2. Step 2: Convert to fraction form
    25,900.56/38,807.10 = 20,695.50/x
  3. Step 3: Cross multiply
    25,900.56x = 38,807.10 × 20,695.50
  4. Step 4: Simplify right side
    25,900.56x = 803,132,338.05
  5. Step 5: Solve for x
    x = 803,132,338.05/25,900.56
  6. Step 6: Final answer
    x = 31,008.30

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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.