Home / 21,419.79-32,130.59-6,629.00

Finding the Fourth Proportional to 21,419.79, 32,130.59 and 6,629.00

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Solution

The fourth proportional to 21,419.79, 32,130.59 and 6,629.00 is: 9,943.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.79 : 32,130.59 = 6,629.00 : x
  2. Step 2: Convert to fraction form
    21,419.79/32,130.59 = 6,629.00/x
  3. Step 3: Cross multiply
    21,419.79x = 32,130.59 × 6,629.00
  4. Step 4: Simplify right side
    21,419.79x = 212,993,487.31
  5. Step 5: Solve for x
    x = 212,993,487.31/21,419.79
  6. Step 6: Final answer
    x = 9,943.77

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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.