Home / 38,376.10-52,955.40-21,378.61

Finding the Fourth Proportional to 38,376.10, 52,955.40 and 21,378.61

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Solution

The fourth proportional to 38,376.10, 52,955.40 and 21,378.61 is: 29,500.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,376.10 : 52,955.40 = 21,378.61 : x
  2. Step 2: Convert to fraction form
    38,376.10/52,955.40 = 21,378.61/x
  3. Step 3: Cross multiply
    38,376.10x = 52,955.40 × 21,378.61
  4. Step 4: Simplify right side
    38,376.10x = 1,132,112,843.99
  5. Step 5: Solve for x
    x = 1,132,112,843.99/38,376.10
  6. Step 6: Final answer
    x = 29,500.47

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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.