Home / 20,964.76-28,932.18-11,533.72

Finding the Fourth Proportional to 20,964.76, 28,932.18 and 11,533.72

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Solution

The fourth proportional to 20,964.76, 28,932.18 and 11,533.72 is: 15,916.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.76 : 28,932.18 = 11,533.72 : x
  2. Step 2: Convert to fraction form
    20,964.76/28,932.18 = 11,533.72/x
  3. Step 3: Cross multiply
    20,964.76x = 28,932.18 × 11,533.72
  4. Step 4: Simplify right side
    20,964.76x = 333,695,663.11
  5. Step 5: Solve for x
    x = 333,695,663.11/20,964.76
  6. Step 6: Final answer
    x = 15,916.98

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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.