Home / 21,020.75-31,534.88-6,981.63

Finding the Fourth Proportional to 21,020.75, 31,534.88 and 6,981.63

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Solution

The fourth proportional to 21,020.75, 31,534.88 and 6,981.63 is: 10,473.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.75 : 31,534.88 = 6,981.63 : x
  2. Step 2: Convert to fraction form
    21,020.75/31,534.88 = 6,981.63/x
  3. Step 3: Cross multiply
    21,020.75x = 31,534.88 × 6,981.63
  4. Step 4: Simplify right side
    21,020.75x = 220,164,829.35
  5. Step 5: Solve for x
    x = 220,164,829.35/21,020.75
  6. Step 6: Final answer
    x = 10,473.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.