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Finding the Fourth Proportional to 35,879.70, 53,813.07 and 13,688.13

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Solution

The fourth proportional to 35,879.70, 53,813.07 and 13,688.13 is: 20,529.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,879.70 : 53,813.07 = 13,688.13 : x
  2. Step 2: Convert to fraction form
    35,879.70/53,813.07 = 13,688.13/x
  3. Step 3: Cross multiply
    35,879.70x = 53,813.07 × 13,688.13
  4. Step 4: Simplify right side
    35,879.70x = 736,600,297.86
  5. Step 5: Solve for x
    x = 736,600,297.86/35,879.70
  6. Step 6: Final answer
    x = 20,529.72

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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.