Home / 13,618.13-20,428.45-5,298.77

Finding the Fourth Proportional to 13,618.13, 20,428.45 and 5,298.77

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Solution

The fourth proportional to 13,618.13, 20,428.45 and 5,298.77 is: 7,948.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.13 : 20,428.45 = 5,298.77 : x
  2. Step 2: Convert to fraction form
    13,618.13/20,428.45 = 5,298.77/x
  3. Step 3: Cross multiply
    13,618.13x = 20,428.45 × 5,298.77
  4. Step 4: Simplify right side
    13,618.13x = 108,245,658.01
  5. Step 5: Solve for x
    x = 108,245,658.01/13,618.13
  6. Step 6: Final answer
    x = 7,948.64

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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.