Home / 21,289.02-29,385.66-13,735.56

Finding the Fourth Proportional to 21,289.02, 29,385.66 and 13,735.56

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Solution

The fourth proportional to 21,289.02, 29,385.66 and 13,735.56 is: 18,959.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.02 : 29,385.66 = 13,735.56 : x
  2. Step 2: Convert to fraction form
    21,289.02/29,385.66 = 13,735.56/x
  3. Step 3: Cross multiply
    21,289.02x = 29,385.66 × 13,735.56
  4. Step 4: Simplify right side
    21,289.02x = 403,628,496.07
  5. Step 5: Solve for x
    x = 403,628,496.07/21,289.02
  6. Step 6: Final answer
    x = 18,959.47

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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.