Home / 39,287.59-54,218.20-21,383.24

Finding the Fourth Proportional to 39,287.59, 54,218.20 and 21,383.24

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Solution

The fourth proportional to 39,287.59, 54,218.20 and 21,383.24 is: 29,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.59 : 54,218.20 = 21,383.24 : x
  2. Step 2: Convert to fraction form
    39,287.59/54,218.20 = 21,383.24/x
  3. Step 3: Cross multiply
    39,287.59x = 54,218.20 × 21,383.24
  4. Step 4: Simplify right side
    39,287.59x = 1,159,360,729.51
  5. Step 5: Solve for x
    x = 1,159,360,729.51/39,287.59
  6. Step 6: Final answer
    x = 29,509.60

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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.