Home / 39,401.96-54,372.80-21,495.90

Finding the Fourth Proportional to 39,401.96, 54,372.80 and 21,495.90

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Solution

The fourth proportional to 39,401.96, 54,372.80 and 21,495.90 is: 29,663.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,401.96 : 54,372.80 = 21,495.90 : x
  2. Step 2: Convert to fraction form
    39,401.96/54,372.80 = 21,495.90/x
  3. Step 3: Cross multiply
    39,401.96x = 54,372.80 × 21,495.90
  4. Step 4: Simplify right side
    39,401.96x = 1,168,792,271.52
  5. Step 5: Solve for x
    x = 1,168,792,271.52/39,401.96
  6. Step 6: Final answer
    x = 29,663.30

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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.