Home / 38,947.30-53,752.50-21,954.85

Finding the Fourth Proportional to 38,947.30, 53,752.50 and 21,954.85

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Solution

The fourth proportional to 38,947.30, 53,752.50 and 21,954.85 is: 30,300.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,947.30 : 53,752.50 = 21,954.85 : x
  2. Step 2: Convert to fraction form
    38,947.30/53,752.50 = 21,954.85/x
  3. Step 3: Cross multiply
    38,947.30x = 53,752.50 × 21,954.85
  4. Step 4: Simplify right side
    38,947.30x = 1,180,128,074.63
  5. Step 5: Solve for x
    x = 1,180,128,074.63/38,947.30
  6. Step 6: Final answer
    x = 30,300.64

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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.