Home / 39,315.59-54,256.48-21,411.56

Finding the Fourth Proportional to 39,315.59, 54,256.48 and 21,411.56

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Solution

The fourth proportional to 39,315.59, 54,256.48 and 21,411.56 is: 29,548.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,315.59 : 54,256.48 = 21,411.56 : x
  2. Step 2: Convert to fraction form
    39,315.59/54,256.48 = 21,411.56/x
  3. Step 3: Cross multiply
    39,315.59x = 54,256.48 × 21,411.56
  4. Step 4: Simplify right side
    39,315.59x = 1,161,715,959.02
  5. Step 5: Solve for x
    x = 1,161,715,959.02/39,315.59
  6. Step 6: Final answer
    x = 29,548.48

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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.