Home / 38,639.67-53,324.73-21,642.90

Finding the Fourth Proportional to 38,639.67, 53,324.73 and 21,642.90

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Solution

The fourth proportional to 38,639.67, 53,324.73 and 21,642.90 is: 29,868.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639.67 : 53,324.73 = 21,642.90 : x
  2. Step 2: Convert to fraction form
    38,639.67/53,324.73 = 21,642.90/x
  3. Step 3: Cross multiply
    38,639.67x = 53,324.73 × 21,642.90
  4. Step 4: Simplify right side
    38,639.67x = 1,154,101,798.92
  5. Step 5: Solve for x
    x = 1,154,101,798.92/38,639.67
  6. Step 6: Final answer
    x = 29,868.31

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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.