Home / 21,313.17-31,989.47-10,790.58

Finding the Fourth Proportional to 21,313.17, 31,989.47 and 10,790.58

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Solution

The fourth proportional to 21,313.17, 31,989.47 and 10,790.58 is: 16,195.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.17 : 31,989.47 = 10,790.58 : x
  2. Step 2: Convert to fraction form
    21,313.17/31,989.47 = 10,790.58/x
  3. Step 3: Cross multiply
    21,313.17x = 31,989.47 × 10,790.58
  4. Step 4: Simplify right side
    21,313.17x = 345,184,881.24
  5. Step 5: Solve for x
    x = 345,184,881.24/21,313.17
  6. Step 6: Final answer
    x = 16,195.85

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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.