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Finding the Fourth Proportional to 35,484.38, 48,970.95 and 20,379.50

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Solution

The fourth proportional to 35,484.38, 48,970.95 and 20,379.50 is: 28,125.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,484.38 : 48,970.95 = 20,379.50 : x
  2. Step 2: Convert to fraction form
    35,484.38/48,970.95 = 20,379.50/x
  3. Step 3: Cross multiply
    35,484.38x = 48,970.95 × 20,379.50
  4. Step 4: Simplify right side
    35,484.38x = 998,003,475.53
  5. Step 5: Solve for x
    x = 998,003,475.53/35,484.38
  6. Step 6: Final answer
    x = 28,125.15

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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.