Home / 38,687.06-53,386.62-21,920.06

Finding the Fourth Proportional to 38,687.06, 53,386.62 and 21,920.06

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Solution

The fourth proportional to 38,687.06, 53,386.62 and 21,920.06 is: 30,248.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,687.06 : 53,386.62 = 21,920.06 : x
  2. Step 2: Convert to fraction form
    38,687.06/53,386.62 = 21,920.06/x
  3. Step 3: Cross multiply
    38,687.06x = 53,386.62 × 21,920.06
  4. Step 4: Simplify right side
    38,687.06x = 1,170,237,913.60
  5. Step 5: Solve for x
    x = 1,170,237,913.60/38,687.06
  6. Step 6: Final answer
    x = 30,248.82

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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.