Home / 39,319.55-54,261.93-21,415.51

Finding the Fourth Proportional to 39,319.55, 54,261.93 and 21,415.51

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Solution

The fourth proportional to 39,319.55, 54,261.93 and 21,415.51 is: 29,553.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,319.55 : 54,261.93 = 21,415.51 : x
  2. Step 2: Convert to fraction form
    39,319.55/54,261.93 = 21,415.51/x
  3. Step 3: Cross multiply
    39,319.55x = 54,261.93 × 21,415.51
  4. Step 4: Simplify right side
    39,319.55x = 1,162,046,904.53
  5. Step 5: Solve for x
    x = 1,162,046,904.53/39,319.55
  6. Step 6: Final answer
    x = 29,553.92

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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.