Home / 21,384.02-29,509.48-11,824.30

Finding the Fourth Proportional to 21,384.02, 29,509.48 and 11,824.30

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Solution

The fourth proportional to 21,384.02, 29,509.48 and 11,824.30 is: 16,317.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.02 : 29,509.48 = 11,824.30 : x
  2. Step 2: Convert to fraction form
    21,384.02/29,509.48 = 11,824.30/x
  3. Step 3: Cross multiply
    21,384.02x = 29,509.48 × 11,824.30
  4. Step 4: Simplify right side
    21,384.02x = 348,928,996.03
  5. Step 5: Solve for x
    x = 348,928,996.03/21,384.02
  6. Step 6: Final answer
    x = 16,317.28

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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.