Home / 26,653.80-39,986.10-9,125.40

Finding the Fourth Proportional to 26,653.80, 39,986.10 and 9,125.40

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Solution

The fourth proportional to 26,653.80, 39,986.10 and 9,125.40 is: 13,689.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,653.80 : 39,986.10 = 9,125.40 : x
  2. Step 2: Convert to fraction form
    26,653.80/39,986.10 = 9,125.40/x
  3. Step 3: Cross multiply
    26,653.80x = 39,986.10 × 9,125.40
  4. Step 4: Simplify right side
    26,653.80x = 364,889,156.94
  5. Step 5: Solve for x
    x = 364,889,156.94/26,653.80
  6. Step 6: Final answer
    x = 13,689.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.