Home / 18,688.84-25,789.29-10,513.66

Finding the Fourth Proportional to 18,688.84, 25,789.29 and 10,513.66

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Solution

The fourth proportional to 18,688.84, 25,789.29 and 10,513.66 is: 14,508.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.84 : 25,789.29 = 10,513.66 : x
  2. Step 2: Convert to fraction form
    18,688.84/25,789.29 = 10,513.66/x
  3. Step 3: Cross multiply
    18,688.84x = 25,789.29 × 10,513.66
  4. Step 4: Simplify right side
    18,688.84x = 271,139,826.70
  5. Step 5: Solve for x
    x = 271,139,826.70/18,688.84
  6. Step 6: Final answer
    x = 14,508.11

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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.