Home / 21,365.40-29,483.28-11,933.76

Finding the Fourth Proportional to 21,365.40, 29,483.28 and 11,933.76

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Solution

The fourth proportional to 21,365.40, 29,483.28 and 11,933.76 is: 16,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,365.40 : 29,483.28 = 11,933.76 : x
  2. Step 2: Convert to fraction form
    21,365.40/29,483.28 = 11,933.76/x
  3. Step 3: Cross multiply
    21,365.40x = 29,483.28 × 11,933.76
  4. Step 4: Simplify right side
    21,365.40x = 351,846,387.53
  5. Step 5: Solve for x
    x = 351,846,387.53/21,365.40
  6. Step 6: Final answer
    x = 16,468.05

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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.