Home / 21,110.32-29,130.01-13,153.42

Finding the Fourth Proportional to 21,110.32, 29,130.01 and 13,153.42

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Solution

The fourth proportional to 21,110.32, 29,130.01 and 13,153.42 is: 18,150.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.32 : 29,130.01 = 13,153.42 : x
  2. Step 2: Convert to fraction form
    21,110.32/29,130.01 = 13,153.42/x
  3. Step 3: Cross multiply
    21,110.32x = 29,130.01 × 13,153.42
  4. Step 4: Simplify right side
    21,110.32x = 383,159,256.13
  5. Step 5: Solve for x
    x = 383,159,256.13/21,110.32
  6. Step 6: Final answer
    x = 18,150.33

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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.