Home / 15,728.85-21,703.34-9,013.19

Finding the Fourth Proportional to 15,728.85, 21,703.34 and 9,013.19

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Solution

The fourth proportional to 15,728.85, 21,703.34 and 9,013.19 is: 12,436.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,728.85 : 21,703.34 = 9,013.19 : x
  2. Step 2: Convert to fraction form
    15,728.85/21,703.34 = 9,013.19/x
  3. Step 3: Cross multiply
    15,728.85x = 21,703.34 × 9,013.19
  4. Step 4: Simplify right side
    15,728.85x = 195,616,173.47
  5. Step 5: Solve for x
    x = 195,616,173.47/15,728.85
  6. Step 6: Final answer
    x = 12,436.78

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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.