Home / 38,782.87-53,521.08-21,556.85

Finding the Fourth Proportional to 38,782.87, 53,521.08 and 21,556.85

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Solution

The fourth proportional to 38,782.87, 53,521.08 and 21,556.85 is: 29,748.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,782.87 : 53,521.08 = 21,556.85 : x
  2. Step 2: Convert to fraction form
    38,782.87/53,521.08 = 21,556.85/x
  3. Step 3: Cross multiply
    38,782.87x = 53,521.08 × 21,556.85
  4. Step 4: Simplify right side
    38,782.87x = 1,153,745,880.39
  5. Step 5: Solve for x
    x = 1,153,745,880.39/38,782.87
  6. Step 6: Final answer
    x = 29,748.85

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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.