Home / 21,313.46-29,399.58-14,143.76

Finding the Fourth Proportional to 21,313.46, 29,399.58 and 14,143.76

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Solution

The fourth proportional to 21,313.46, 29,399.58 and 14,143.76 is: 19,509.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.46 : 29,399.58 = 14,143.76 : x
  2. Step 2: Convert to fraction form
    21,313.46/29,399.58 = 14,143.76/x
  3. Step 3: Cross multiply
    21,313.46x = 29,399.58 × 14,143.76
  4. Step 4: Simplify right side
    21,313.46x = 415,820,603.62
  5. Step 5: Solve for x
    x = 415,820,603.62/21,313.46
  6. Step 6: Final answer
    x = 19,509.77

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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.