Home / 38,651.37-53,340.42-21,655.76

Finding the Fourth Proportional to 38,651.37, 53,340.42 and 21,655.76

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Solution

The fourth proportional to 38,651.37, 53,340.42 and 21,655.76 is: 29,885.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,651.37 : 53,340.42 = 21,655.76 : x
  2. Step 2: Convert to fraction form
    38,651.37/53,340.42 = 21,655.76/x
  3. Step 3: Cross multiply
    38,651.37x = 53,340.42 × 21,655.76
  4. Step 4: Simplify right side
    38,651.37x = 1,155,127,333.82
  5. Step 5: Solve for x
    x = 1,155,127,333.82/38,651.37
  6. Step 6: Final answer
    x = 29,885.81

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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.