Home / 39,345.50-54,296.78-21,440.51

Finding the Fourth Proportional to 39,345.50, 54,296.78 and 21,440.51

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Solution

The fourth proportional to 39,345.50, 54,296.78 and 21,440.51 is: 29,587.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,345.50 : 54,296.78 = 21,440.51 : x
  2. Step 2: Convert to fraction form
    39,345.50/54,296.78 = 21,440.51/x
  3. Step 3: Cross multiply
    39,345.50x = 54,296.78 × 21,440.51
  4. Step 4: Simplify right side
    39,345.50x = 1,164,150,275.87
  5. Step 5: Solve for x
    x = 1,164,150,275.87/39,345.50
  6. Step 6: Final answer
    x = 29,587.89

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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.