Home / 38,218.18-52,739.32-21,223.51

Finding the Fourth Proportional to 38,218.18, 52,739.32 and 21,223.51

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Solution

The fourth proportional to 38,218.18, 52,739.32 and 21,223.51 is: 29,287.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,218.18 : 52,739.32 = 21,223.51 : x
  2. Step 2: Convert to fraction form
    38,218.18/52,739.32 = 21,223.51/x
  3. Step 3: Cross multiply
    38,218.18x = 52,739.32 × 21,223.51
  4. Step 4: Simplify right side
    38,218.18x = 1,119,313,176.60
  5. Step 5: Solve for x
    x = 1,119,313,176.60/38,218.18
  6. Step 6: Final answer
    x = 29,287.45

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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.