Home / 39,417.96-54,396.32-21,513.72

Finding the Fourth Proportional to 39,417.96, 54,396.32 and 21,513.72

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Solution

The fourth proportional to 39,417.96, 54,396.32 and 21,513.72 is: 29,688.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,417.96 : 54,396.32 = 21,513.72 : x
  2. Step 2: Convert to fraction form
    39,417.96/54,396.32 = 21,513.72/x
  3. Step 3: Cross multiply
    39,417.96x = 54,396.32 × 21,513.72
  4. Step 4: Simplify right side
    39,417.96x = 1,170,267,197.51
  5. Step 5: Solve for x
    x = 1,170,267,197.51/39,417.96
  6. Step 6: Final answer
    x = 29,688.68

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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.