Home / 38,431.13-53,034.95-21,664.13

Finding the Fourth Proportional to 38,431.13, 53,034.95 and 21,664.13

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Solution

The fourth proportional to 38,431.13, 53,034.95 and 21,664.13 is: 29,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.13 : 53,034.95 = 21,664.13 : x
  2. Step 2: Convert to fraction form
    38,431.13/53,034.95 = 21,664.13/x
  3. Step 3: Cross multiply
    38,431.13x = 53,034.95 × 21,664.13
  4. Step 4: Simplify right side
    38,431.13x = 1,148,955,840.33
  5. Step 5: Solve for x
    x = 1,148,955,840.33/38,431.13
  6. Step 6: Final answer
    x = 29,896.49

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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.