Home / 39,313.78-54,254.34-21,409.08

Finding the Fourth Proportional to 39,313.78, 54,254.34 and 21,409.08

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Solution

The fourth proportional to 39,313.78, 54,254.34 and 21,409.08 is: 29,545.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,313.78 : 54,254.34 = 21,409.08 : x
  2. Step 2: Convert to fraction form
    39,313.78/54,254.34 = 21,409.08/x
  3. Step 3: Cross multiply
    39,313.78x = 54,254.34 × 21,409.08
  4. Step 4: Simplify right side
    39,313.78x = 1,161,535,505.41
  5. Step 5: Solve for x
    x = 1,161,535,505.41/39,313.78
  6. Step 6: Final answer
    x = 29,545.25

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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.