Home / 38,115.51-52,603.47-21,121.17

Finding the Fourth Proportional to 38,115.51, 52,603.47 and 21,121.17

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Solution

The fourth proportional to 38,115.51, 52,603.47 and 21,121.17 is: 29,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,115.51 : 52,603.47 = 21,121.17 : x
  2. Step 2: Convert to fraction form
    38,115.51/52,603.47 = 21,121.17/x
  3. Step 3: Cross multiply
    38,115.51x = 52,603.47 × 21,121.17
  4. Step 4: Simplify right side
    38,115.51x = 1,111,046,832.46
  5. Step 5: Solve for x
    x = 1,111,046,832.46/38,115.51
  6. Step 6: Final answer
    x = 29,149.47

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Double scale
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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.