Home / 39,164.40-54,045.28-21,258.72

Finding the Fourth Proportional to 39,164.40, 54,045.28 and 21,258.72

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Solution

The fourth proportional to 39,164.40, 54,045.28 and 21,258.72 is: 29,336.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,164.40 : 54,045.28 = 21,258.72 : x
  2. Step 2: Convert to fraction form
    39,164.40/54,045.28 = 21,258.72/x
  3. Step 3: Cross multiply
    39,164.40x = 54,045.28 × 21,258.72
  4. Step 4: Simplify right side
    39,164.40x = 1,148,933,474.84
  5. Step 5: Solve for x
    x = 1,148,933,474.84/39,164.40
  6. Step 6: Final answer
    x = 29,336.17

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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.