Home / 15,455.85-21,328.82-8,741.23

Finding the Fourth Proportional to 15,455.85, 21,328.82 and 8,741.23

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Solution

The fourth proportional to 15,455.85, 21,328.82 and 8,741.23 is: 12,062.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.85 : 21,328.82 = 8,741.23 : x
  2. Step 2: Convert to fraction form
    15,455.85/21,328.82 = 8,741.23/x
  3. Step 3: Cross multiply
    15,455.85x = 21,328.82 × 8,741.23
  4. Step 4: Simplify right side
    15,455.85x = 186,440,014.60
  5. Step 5: Solve for x
    x = 186,440,014.60/15,455.85
  6. Step 6: Final answer
    x = 12,062.75

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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.