Home / 39,400.63-54,372.77-21,495.48

Finding the Fourth Proportional to 39,400.63, 54,372.77 and 21,495.48

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Solution

The fourth proportional to 39,400.63, 54,372.77 and 21,495.48 is: 29,663.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,400.63 : 54,372.77 = 21,495.48 : x
  2. Step 2: Convert to fraction form
    39,400.63/54,372.77 = 21,495.48/x
  3. Step 3: Cross multiply
    39,400.63x = 54,372.77 × 21,495.48
  4. Step 4: Simplify right side
    39,400.63x = 1,168,768,559.31
  5. Step 5: Solve for x
    x = 1,168,768,559.31/39,400.63
  6. Step 6: Final answer
    x = 29,663.70

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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.