Home / 15,191.08-20,961.16-10,147.21

Finding the Fourth Proportional to 15,191.08, 20,961.16 and 10,147.21

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Solution

The fourth proportional to 15,191.08, 20,961.16 and 10,147.21 is: 14,001.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,191.08 : 20,961.16 = 10,147.21 : x
  2. Step 2: Convert to fraction form
    15,191.08/20,961.16 = 10,147.21/x
  3. Step 3: Cross multiply
    15,191.08x = 20,961.16 × 10,147.21
  4. Step 4: Simplify right side
    15,191.08x = 212,697,292.36
  5. Step 5: Solve for x
    x = 212,697,292.36/15,191.08
  6. Step 6: Final answer
    x = 14,001.46

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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.