Home / 38,421.24-53,025.84-21,428.16

Finding the Fourth Proportional to 38,421.24, 53,025.84 and 21,428.16

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Solution

The fourth proportional to 38,421.24, 53,025.84 and 21,428.16 is: 29,573.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.24 : 53,025.84 = 21,428.16 : x
  2. Step 2: Convert to fraction form
    38,421.24/53,025.84 = 21,428.16/x
  3. Step 3: Cross multiply
    38,421.24x = 53,025.84 × 21,428.16
  4. Step 4: Simplify right side
    38,421.24x = 1,136,246,183.65
  5. Step 5: Solve for x
    x = 1,136,246,183.65/38,421.24
  6. Step 6: Final answer
    x = 29,573.39

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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.