Home / 18,486.40-25,511.76-10,528.72

Finding the Fourth Proportional to 18,486.40, 25,511.76 and 10,528.72

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Solution

The fourth proportional to 18,486.40, 25,511.76 and 10,528.72 is: 14,529.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.40 : 25,511.76 = 10,528.72 : x
  2. Step 2: Convert to fraction form
    18,486.40/25,511.76 = 10,528.72/x
  3. Step 3: Cross multiply
    18,486.40x = 25,511.76 × 10,528.72
  4. Step 4: Simplify right side
    18,486.40x = 268,606,177.75
  5. Step 5: Solve for x
    x = 268,606,177.75/18,486.40
  6. Step 6: Final answer
    x = 14,529.93

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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.