Home / 10,148.94-15,205.98-9,121.75

Finding the Fourth Proportional to 10,148.94, 15,205.98 and 9,121.75

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Solution

The fourth proportional to 10,148.94, 15,205.98 and 9,121.75 is: 13,666.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,148.94 : 15,205.98 = 9,121.75 : x
  2. Step 2: Convert to fraction form
    10,148.94/15,205.98 = 9,121.75/x
  3. Step 3: Cross multiply
    10,148.94x = 15,205.98 × 9,121.75
  4. Step 4: Simplify right side
    10,148.94x = 138,705,148.07
  5. Step 5: Solve for x
    x = 138,705,148.07/10,148.94
  6. Step 6: Final answer
    x = 13,666.96

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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.