Home / 39,382.69-54,349.43-21,478.67

Finding the Fourth Proportional to 39,382.69, 54,349.43 and 21,478.67

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Solution

The fourth proportional to 39,382.69, 54,349.43 and 21,478.67 is: 29,641.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,382.69 : 54,349.43 = 21,478.67 : x
  2. Step 2: Convert to fraction form
    39,382.69/54,349.43 = 21,478.67/x
  3. Step 3: Cross multiply
    39,382.69x = 54,349.43 × 21,478.67
  4. Step 4: Simplify right side
    39,382.69x = 1,167,353,471.66
  5. Step 5: Solve for x
    x = 1,167,353,471.66/39,382.69
  6. Step 6: Final answer
    x = 29,641.28

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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.