Home / 38,492.78-53,116.26-21,495.66

Finding the Fourth Proportional to 38,492.78, 53,116.26 and 21,495.66

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Solution

The fourth proportional to 38,492.78, 53,116.26 and 21,495.66 is: 29,661.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,492.78 : 53,116.26 = 21,495.66 : x
  2. Step 2: Convert to fraction form
    38,492.78/53,116.26 = 21,495.66/x
  3. Step 3: Cross multiply
    38,492.78x = 53,116.26 × 21,495.66
  4. Step 4: Simplify right side
    38,492.78x = 1,141,769,065.43
  5. Step 5: Solve for x
    x = 1,141,769,065.43/38,492.78
  6. Step 6: Final answer
    x = 29,661.91

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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.