Home / 18,653.16-25,740.60-10,689.84

Finding the Fourth Proportional to 18,653.16, 25,740.60 and 10,689.84

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Solution

The fourth proportional to 18,653.16, 25,740.60 and 10,689.84 is: 14,751.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,653.16 : 25,740.60 = 10,689.84 : x
  2. Step 2: Convert to fraction form
    18,653.16/25,740.60 = 10,689.84/x
  3. Step 3: Cross multiply
    18,653.16x = 25,740.60 × 10,689.84
  4. Step 4: Simplify right side
    18,653.16x = 275,162,895.50
  5. Step 5: Solve for x
    x = 275,162,895.50/18,653.16
  6. Step 6: Final answer
    x = 14,751.54

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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.