Home / 21,289.27-29,386.01-13,735.81

Finding the Fourth Proportional to 21,289.27, 29,386.01 and 13,735.81

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Solution

The fourth proportional to 21,289.27, 29,386.01 and 13,735.81 is: 18,959.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.27 : 29,386.01 = 13,735.81 : x
  2. Step 2: Convert to fraction form
    21,289.27/29,386.01 = 13,735.81/x
  3. Step 3: Cross multiply
    21,289.27x = 29,386.01 × 13,735.81
  4. Step 4: Simplify right side
    21,289.27x = 403,640,650.02
  5. Step 5: Solve for x
    x = 403,640,650.02/21,289.27
  6. Step 6: Final answer
    x = 18,959.82

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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.