Home / 39,417.83-54,396.80-21,513.25

Finding the Fourth Proportional to 39,417.83, 54,396.80 and 21,513.25

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Solution

The fourth proportional to 39,417.83, 54,396.80 and 21,513.25 is: 29,688.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.83 : 54,396.80 = 21,513.25 : x
  2. Step 2: Convert to fraction form
    39,417.83/54,396.80 = 21,513.25/x
  3. Step 3: Cross multiply
    39,417.83x = 54,396.80 × 21,513.25
  4. Step 4: Simplify right side
    39,417.83x = 1,170,251,957.60
  5. Step 5: Solve for x
    x = 1,170,251,957.60/39,417.83
  6. Step 6: Final answer
    x = 29,688.39

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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.