Home / 39,303.38-54,238.56-21,398.51

Finding the Fourth Proportional to 39,303.38, 54,238.56 and 21,398.51

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Solution

The fourth proportional to 39,303.38, 54,238.56 and 21,398.51 is: 29,529.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,303.38 : 54,238.56 = 21,398.51 : x
  2. Step 2: Convert to fraction form
    39,303.38/54,238.56 = 21,398.51/x
  3. Step 3: Cross multiply
    39,303.38x = 54,238.56 × 21,398.51
  4. Step 4: Simplify right side
    39,303.38x = 1,160,624,097.35
  5. Step 5: Solve for x
    x = 1,160,624,097.35/39,303.38
  6. Step 6: Final answer
    x = 29,529.88

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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.