Home / 21,358.72-29,471.52-11,925.76

Finding the Fourth Proportional to 21,358.72, 29,471.52 and 11,925.76

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Solution

The fourth proportional to 21,358.72, 29,471.52 and 11,925.76 is: 16,455.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.72 : 29,471.52 = 11,925.76 : x
  2. Step 2: Convert to fraction form
    21,358.72/29,471.52 = 11,925.76/x
  3. Step 3: Cross multiply
    21,358.72x = 29,471.52 × 11,925.76
  4. Step 4: Simplify right side
    21,358.72x = 351,470,274.36
  5. Step 5: Solve for x
    x = 351,470,274.36/21,358.72
  6. Step 6: Final answer
    x = 16,455.59

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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.