Home / 42,778.29-64,166.34-11,612.73

Finding the Fourth Proportional to 42,778.29, 64,166.34 and 11,612.73

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Solution

The fourth proportional to 42,778.29, 64,166.34 and 11,612.73 is: 17,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.29 : 64,166.34 = 11,612.73 : x
  2. Step 2: Convert to fraction form
    42,778.29/64,166.34 = 11,612.73/x
  3. Step 3: Cross multiply
    42,778.29x = 64,166.34 × 11,612.73
  4. Step 4: Simplify right side
    42,778.29x = 745,146,381.51
  5. Step 5: Solve for x
    x = 745,146,381.51/42,778.29
  6. Step 6: Final answer
    x = 17,418.80

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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.