Home / 38,679.79-53,337.57-28,629.31

Finding the Fourth Proportional to 38,679.79, 53,337.57 and 28,629.31

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Solution

The fourth proportional to 38,679.79, 53,337.57 and 28,629.31 is: 39,478.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,679.79 : 53,337.57 = 28,629.31 : x
  2. Step 2: Convert to fraction form
    38,679.79/53,337.57 = 28,629.31/x
  3. Step 3: Cross multiply
    38,679.79x = 53,337.57 × 28,629.31
  4. Step 4: Simplify right side
    38,679.79x = 1,527,017,826.18
  5. Step 5: Solve for x
    x = 1,527,017,826.18/38,679.79
  6. Step 6: Final answer
    x = 39,478.44

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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.