Home / 13,426.32-18,528.20-7,458

Finding the Fourth Proportional to 13,426.32, 18,528.20 and 7,458

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Solution

The fourth proportional to 13,426.32, 18,528.20 and 7,458 is: 10,291.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,426.32 : 18,528.20 = 7,458 : x
  2. Step 2: Convert to fraction form
    13,426.32/18,528.20 = 7,458/x
  3. Step 3: Cross multiply
    13,426.32x = 18,528.20 × 7,458
  4. Step 4: Simplify right side
    13,426.32x = 138,183,315.60
  5. Step 5: Solve for x
    x = 138,183,315.60/13,426.32
  6. Step 6: Final answer
    x = 10,291.97

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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.