Home / 38,947.83-53,746.46-21,955.61

Finding the Fourth Proportional to 38,947.83, 53,746.46 and 21,955.61

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Solution

The fourth proportional to 38,947.83, 53,746.46 and 21,955.61 is: 30,297.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,947.83 : 53,746.46 = 21,955.61 : x
  2. Step 2: Convert to fraction form
    38,947.83/53,746.46 = 21,955.61/x
  3. Step 3: Cross multiply
    38,947.83x = 53,746.46 × 21,955.61
  4. Step 4: Simplify right side
    38,947.83x = 1,180,036,314.64
  5. Step 5: Solve for x
    x = 1,180,036,314.64/38,947.83
  6. Step 6: Final answer
    x = 30,297.87

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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.