Home / 21,278.73-31,937.80-10,756.19

Finding the Fourth Proportional to 21,278.73, 31,937.80 and 10,756.19

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Solution

The fourth proportional to 21,278.73, 31,937.80 and 10,756.19 is: 16,144.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,278.73 : 31,937.80 = 10,756.19 : x
  2. Step 2: Convert to fraction form
    21,278.73/31,937.80 = 10,756.19/x
  3. Step 3: Cross multiply
    21,278.73x = 31,937.80 × 10,756.19
  4. Step 4: Simplify right side
    21,278.73x = 343,529,044.98
  5. Step 5: Solve for x
    x = 343,529,044.98/21,278.73
  6. Step 6: Final answer
    x = 16,144.25

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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.