Home / 21,313.98-31,941.81-10,903.86

Finding the Fourth Proportional to 21,313.98, 31,941.81 and 10,903.86

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Solution

The fourth proportional to 21,313.98, 31,941.81 and 10,903.86 is: 16,340.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.98 : 31,941.81 = 10,903.86 : x
  2. Step 2: Convert to fraction form
    21,313.98/31,941.81 = 10,903.86/x
  3. Step 3: Cross multiply
    21,313.98x = 31,941.81 × 10,903.86
  4. Step 4: Simplify right side
    21,313.98x = 348,289,024.39
  5. Step 5: Solve for x
    x = 348,289,024.39/21,313.98
  6. Step 6: Final answer
    x = 16,340.87

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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.