Home / 39,339.63-54,309.21-30,707.28

Finding the Fourth Proportional to 39,339.63, 54,309.21 and 30,707.28

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Solution

The fourth proportional to 39,339.63, 54,309.21 and 30,707.28 is: 42,392.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,339.63 : 54,309.21 = 30,707.28 : x
  2. Step 2: Convert to fraction form
    39,339.63/54,309.21 = 30,707.28/x
  3. Step 3: Cross multiply
    39,339.63x = 54,309.21 × 30,707.28
  4. Step 4: Simplify right side
    39,339.63x = 1,667,688,118.05
  5. Step 5: Solve for x
    x = 1,667,688,118.05/39,339.63
  6. Step 6: Final answer
    x = 42,392.06

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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.