Home / 21,515.28-32,267-15,256.80

Finding the Fourth Proportional to 21,515.28, 32,267 and 15,256.80

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Solution

The fourth proportional to 21,515.28, 32,267 and 15,256.80 is: 22,881.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,515.28 : 32,267 = 15,256.80 : x
  2. Step 2: Convert to fraction form
    21,515.28/32,267 = 15,256.80/x
  3. Step 3: Cross multiply
    21,515.28x = 32,267 × 15,256.80
  4. Step 4: Simplify right side
    21,515.28x = 492,291,165.60
  5. Step 5: Solve for x
    x = 492,291,165.60/21,515.28
  6. Step 6: Final answer
    x = 22,881.00

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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.