Home / 21,477.42-29,571.48-19,509.12

Finding the Fourth Proportional to 21,477.42, 29,571.48 and 19,509.12

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Solution

The fourth proportional to 21,477.42, 29,571.48 and 19,509.12 is: 26,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,477.42 : 29,571.48 = 19,509.12 : x
  2. Step 2: Convert to fraction form
    21,477.42/29,571.48 = 19,509.12/x
  3. Step 3: Cross multiply
    21,477.42x = 29,571.48 × 19,509.12
  4. Step 4: Simplify right side
    21,477.42x = 576,913,551.90
  5. Step 5: Solve for x
    x = 576,913,551.90/21,477.42
  6. Step 6: Final answer
    x = 26,861.40

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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.