Home / 20,510.54-28,301.10-11,433.92

Finding the Fourth Proportional to 20,510.54, 28,301.10 and 11,433.92

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Solution

The fourth proportional to 20,510.54, 28,301.10 and 11,433.92 is: 15,776.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.54 : 28,301.10 = 11,433.92 : x
  2. Step 2: Convert to fraction form
    20,510.54/28,301.10 = 11,433.92/x
  3. Step 3: Cross multiply
    20,510.54x = 28,301.10 × 11,433.92
  4. Step 4: Simplify right side
    20,510.54x = 323,592,513.31
  5. Step 5: Solve for x
    x = 323,592,513.31/20,510.54
  6. Step 6: Final answer
    x = 15,776.89

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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.