Home / 42,772.06-64,166.63-13,188.77

Finding the Fourth Proportional to 42,772.06, 64,166.63 and 13,188.77

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Solution

The fourth proportional to 42,772.06, 64,166.63 and 13,188.77 is: 19,785.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,772.06 : 64,166.63 = 13,188.77 : x
  2. Step 2: Convert to fraction form
    42,772.06/64,166.63 = 13,188.77/x
  3. Step 3: Cross multiply
    42,772.06x = 64,166.63 × 13,188.77
  4. Step 4: Simplify right side
    42,772.06x = 846,278,537.97
  5. Step 5: Solve for x
    x = 846,278,537.97/42,772.06
  6. Step 6: Final answer
    x = 19,785.78

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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.