Home / 21,639.63-29,862.69-11,703.63

Finding the Fourth Proportional to 21,639.63, 29,862.69 and 11,703.63

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Solution

The fourth proportional to 21,639.63, 29,862.69 and 11,703.63 is: 16,151.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.63 : 29,862.69 = 11,703.63 : x
  2. Step 2: Convert to fraction form
    21,639.63/29,862.69 = 11,703.63/x
  3. Step 3: Cross multiply
    21,639.63x = 29,862.69 × 11,703.63
  4. Step 4: Simplify right side
    21,639.63x = 349,501,874.56
  5. Step 5: Solve for x
    x = 349,501,874.56/21,639.63
  6. Step 6: Final answer
    x = 16,151.01

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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.