Home / 15,703.26-21,672.54-8,989.98

Finding the Fourth Proportional to 15,703.26, 21,672.54 and 8,989.98

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Solution

The fourth proportional to 15,703.26, 21,672.54 and 8,989.98 is: 12,407.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,703.26 : 21,672.54 = 8,989.98 : x
  2. Step 2: Convert to fraction form
    15,703.26/21,672.54 = 8,989.98/x
  3. Step 3: Cross multiply
    15,703.26x = 21,672.54 × 8,989.98
  4. Step 4: Simplify right side
    15,703.26x = 194,835,701.15
  5. Step 5: Solve for x
    x = 194,835,701.15/15,703.26
  6. Step 6: Final answer
    x = 12,407.34

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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.