Home / 39,381.69-54,348.05-21,477.67

Finding the Fourth Proportional to 39,381.69, 54,348.05 and 21,477.67

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Solution

The fourth proportional to 39,381.69, 54,348.05 and 21,477.67 is: 29,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,381.69 : 54,348.05 = 21,477.67 : x
  2. Step 2: Convert to fraction form
    39,381.69/54,348.05 = 21,477.67/x
  3. Step 3: Cross multiply
    39,381.69x = 54,348.05 × 21,477.67
  4. Step 4: Simplify right side
    39,381.69x = 1,167,269,483.04
  5. Step 5: Solve for x
    x = 1,167,269,483.04/39,381.69
  6. Step 6: Final answer
    x = 29,639.90

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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.