Home / 15,703.64-21,670.57-8,989.03

Finding the Fourth Proportional to 15,703.64, 21,670.57 and 8,989.03

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Solution

The fourth proportional to 15,703.64, 21,670.57 and 8,989.03 is: 12,404.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,703.64 : 21,670.57 = 8,989.03 : x
  2. Step 2: Convert to fraction form
    15,703.64/21,670.57 = 8,989.03/x
  3. Step 3: Cross multiply
    15,703.64x = 21,670.57 × 8,989.03
  4. Step 4: Simplify right side
    15,703.64x = 194,797,403.85
  5. Step 5: Solve for x
    x = 194,797,403.85/15,703.64
  6. Step 6: Final answer
    x = 12,404.60

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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.