Home / 13,513.04-20,269.56-5,721.92

Finding the Fourth Proportional to 13,513.04, 20,269.56 and 5,721.92

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Solution

The fourth proportional to 13,513.04, 20,269.56 and 5,721.92 is: 8,582.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.04 : 20,269.56 = 5,721.92 : x
  2. Step 2: Convert to fraction form
    13,513.04/20,269.56 = 5,721.92/x
  3. Step 3: Cross multiply
    13,513.04x = 20,269.56 × 5,721.92
  4. Step 4: Simplify right side
    13,513.04x = 115,980,800.76
  5. Step 5: Solve for x
    x = 115,980,800.76/13,513.04
  6. Step 6: Final answer
    x = 8,582.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.