Home / 39,313.70-54,253.88-21,409.68

Finding the Fourth Proportional to 39,313.70, 54,253.88 and 21,409.68

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Solution

The fourth proportional to 39,313.70, 54,253.88 and 21,409.68 is: 29,545.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,313.70 : 54,253.88 = 21,409.68 : x
  2. Step 2: Convert to fraction form
    39,313.70/54,253.88 = 21,409.68/x
  3. Step 3: Cross multiply
    39,313.70x = 54,253.88 × 21,409.68
  4. Step 4: Simplify right side
    39,313.70x = 1,161,558,506.68
  5. Step 5: Solve for x
    x = 1,161,558,506.68/39,313.70
  6. Step 6: Final answer
    x = 29,545.89

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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.