Home / 21,242.79-29,323.08-18,246.60

Finding the Fourth Proportional to 21,242.79, 29,323.08 and 18,246.60

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Solution

The fourth proportional to 21,242.79, 29,323.08 and 18,246.60 is: 25,187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.79 : 29,323.08 = 18,246.60 : x
  2. Step 2: Convert to fraction form
    21,242.79/29,323.08 = 18,246.60/x
  3. Step 3: Cross multiply
    21,242.79x = 29,323.08 × 18,246.60
  4. Step 4: Simplify right side
    21,242.79x = 535,046,511.53
  5. Step 5: Solve for x
    x = 535,046,511.53/21,242.79
  6. Step 6: Final answer
    x = 25,187.21

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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.