Home / 20,964.96-28,931.76-11,533.68

Finding the Fourth Proportional to 20,964.96, 28,931.76 and 11,533.68

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Solution

The fourth proportional to 20,964.96, 28,931.76 and 11,533.68 is: 15,916.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.96 : 28,931.76 = 11,533.68 : x
  2. Step 2: Convert to fraction form
    20,964.96/28,931.76 = 11,533.68/x
  3. Step 3: Cross multiply
    20,964.96x = 28,931.76 × 11,533.68
  4. Step 4: Simplify right side
    20,964.96x = 333,689,661.68
  5. Step 5: Solve for x
    x = 333,689,661.68/20,964.96
  6. Step 6: Final answer
    x = 15,916.54

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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.