Home / 21,369.02-32,039.63-7,135.75

Finding the Fourth Proportional to 21,369.02, 32,039.63 and 7,135.75

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Solution

The fourth proportional to 21,369.02, 32,039.63 and 7,135.75 is: 10,698.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.02 : 32,039.63 = 7,135.75 : x
  2. Step 2: Convert to fraction form
    21,369.02/32,039.63 = 7,135.75/x
  3. Step 3: Cross multiply
    21,369.02x = 32,039.63 × 7,135.75
  4. Step 4: Simplify right side
    21,369.02x = 228,626,673.99
  5. Step 5: Solve for x
    x = 228,626,673.99/21,369.02
  6. Step 6: Final answer
    x = 10,698.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.