Home / 38,487.21-53,099.87-21,488.69

Finding the Fourth Proportional to 38,487.21, 53,099.87 and 21,488.69

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Solution

The fourth proportional to 38,487.21, 53,099.87 and 21,488.69 is: 29,647.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,487.21 : 53,099.87 = 21,488.69 : x
  2. Step 2: Convert to fraction form
    38,487.21/53,099.87 = 21,488.69/x
  3. Step 3: Cross multiply
    38,487.21x = 53,099.87 × 21,488.69
  4. Step 4: Simplify right side
    38,487.21x = 1,141,046,272.53
  5. Step 5: Solve for x
    x = 1,141,046,272.53/38,487.21
  6. Step 6: Final answer
    x = 29,647.41

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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.