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Finding the Fourth Proportional to 35,497.65, 48,985.11 and 20,379.67

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Solution

The fourth proportional to 35,497.65, 48,985.11 and 20,379.67 is: 28,123.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,497.65 : 48,985.11 = 20,379.67 : x
  2. Step 2: Convert to fraction form
    35,497.65/48,985.11 = 20,379.67/x
  3. Step 3: Cross multiply
    35,497.65x = 48,985.11 × 20,379.67
  4. Step 4: Simplify right side
    35,497.65x = 998,300,274.82
  5. Step 5: Solve for x
    x = 998,300,274.82/35,497.65
  6. Step 6: Final answer
    x = 28,123.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.