Home / 39,394.61-54,364.91-21,489.70

Finding the Fourth Proportional to 39,394.61, 54,364.91 and 21,489.70

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Solution

The fourth proportional to 39,394.61, 54,364.91 and 21,489.70 is: 29,655.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,394.61 : 54,364.91 = 21,489.70 : x
  2. Step 2: Convert to fraction form
    39,394.61/54,364.91 = 21,489.70/x
  3. Step 3: Cross multiply
    39,394.61x = 54,364.91 × 21,489.70
  4. Step 4: Simplify right side
    39,394.61x = 1,168,285,606.43
  5. Step 5: Solve for x
    x = 1,168,285,606.43/39,394.61
  6. Step 6: Final answer
    x = 29,655.98

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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.