Home / 21,313.02-29,412-11,881.38

Finding the Fourth Proportional to 21,313.02, 29,412 and 11,881.38

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Solution

The fourth proportional to 21,313.02, 29,412 and 11,881.38 is: 16,396.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.02 : 29,412 = 11,881.38 : x
  2. Step 2: Convert to fraction form
    21,313.02/29,412 = 11,881.38/x
  3. Step 3: Cross multiply
    21,313.02x = 29,412 × 11,881.38
  4. Step 4: Simplify right side
    21,313.02x = 349,455,148.56
  5. Step 5: Solve for x
    x = 349,455,148.56/21,313.02
  6. Step 6: Final answer
    x = 16,396.32

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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.