Home / 39,308.09-54,243.90-21,402.95

Finding the Fourth Proportional to 39,308.09, 54,243.90 and 21,402.95

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Solution

The fourth proportional to 39,308.09, 54,243.90 and 21,402.95 is: 29,535.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308.09 : 54,243.90 = 21,402.95 : x
  2. Step 2: Convert to fraction form
    39,308.09/54,243.90 = 21,402.95/x
  3. Step 3: Cross multiply
    39,308.09x = 54,243.90 × 21,402.95
  4. Step 4: Simplify right side
    39,308.09x = 1,160,979,479.51
  5. Step 5: Solve for x
    x = 1,160,979,479.51/39,308.09
  6. Step 6: Final answer
    x = 29,535.38

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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.