Home / 42,777.74-64,166.38-11,612.99

Finding the Fourth Proportional to 42,777.74, 64,166.38 and 11,612.99

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Solution

The fourth proportional to 42,777.74, 64,166.38 and 11,612.99 is: 17,419.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,777.74 : 64,166.38 = 11,612.99 : x
  2. Step 2: Convert to fraction form
    42,777.74/64,166.38 = 11,612.99/x
  3. Step 3: Cross multiply
    42,777.74x = 64,166.38 × 11,612.99
  4. Step 4: Simplify right side
    42,777.74x = 745,163,660.66
  5. Step 5: Solve for x
    x = 745,163,660.66/42,777.74
  6. Step 6: Final answer
    x = 17,419.42

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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.