Home / 18,426.89-25,429.65-11,257.99

Finding the Fourth Proportional to 18,426.89, 25,429.65 and 11,257.99

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Solution

The fourth proportional to 18,426.89, 25,429.65 and 11,257.99 is: 15,536.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.89 : 25,429.65 = 11,257.99 : x
  2. Step 2: Convert to fraction form
    18,426.89/25,429.65 = 11,257.99/x
  3. Step 3: Cross multiply
    18,426.89x = 25,429.65 × 11,257.99
  4. Step 4: Simplify right side
    18,426.89x = 286,286,639.61
  5. Step 5: Solve for x
    x = 286,286,639.61/18,426.89
  6. Step 6: Final answer
    x = 15,536.35

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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.