Home / 11,398.79-15,741.20-10,777.56

Finding the Fourth Proportional to 11,398.79, 15,741.20 and 10,777.56

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Solution

The fourth proportional to 11,398.79, 15,741.20 and 10,777.56 is: 14,883.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.79 : 15,741.20 = 10,777.56 : x
  2. Step 2: Convert to fraction form
    11,398.79/15,741.20 = 10,777.56/x
  3. Step 3: Cross multiply
    11,398.79x = 15,741.20 × 10,777.56
  4. Step 4: Simplify right side
    11,398.79x = 169,651,695.39
  5. Step 5: Solve for x
    x = 169,651,695.39/11,398.79
  6. Step 6: Final answer
    x = 14,883.30

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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.