Home / 39,487.81-54,493.08-21,582.94

Finding the Fourth Proportional to 39,487.81, 54,493.08 and 21,582.94

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Solution

The fourth proportional to 39,487.81, 54,493.08 and 21,582.94 is: 29,784.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,487.81 : 54,493.08 = 21,582.94 : x
  2. Step 2: Convert to fraction form
    39,487.81/54,493.08 = 21,582.94/x
  3. Step 3: Cross multiply
    39,487.81x = 54,493.08 × 21,582.94
  4. Step 4: Simplify right side
    39,487.81x = 1,176,120,876.06
  5. Step 5: Solve for x
    x = 1,176,120,876.06/39,487.81
  6. Step 6: Final answer
    x = 29,784.40

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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.