Home / 38,485.51-53,110.90-21,489.17

Finding the Fourth Proportional to 38,485.51, 53,110.90 and 21,489.17

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Solution

The fourth proportional to 38,485.51, 53,110.90 and 21,489.17 is: 29,655.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,485.51 : 53,110.90 = 21,489.17 : x
  2. Step 2: Convert to fraction form
    38,485.51/53,110.90 = 21,489.17/x
  3. Step 3: Cross multiply
    38,485.51x = 53,110.90 × 21,489.17
  4. Step 4: Simplify right side
    38,485.51x = 1,141,309,158.95
  5. Step 5: Solve for x
    x = 1,141,309,158.95/38,485.51
  6. Step 6: Final answer
    x = 29,655.56

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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.