Home / 21,435.96-29,580.94-11,875.47

Finding the Fourth Proportional to 21,435.96, 29,580.94 and 11,875.47

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Solution

The fourth proportional to 21,435.96, 29,580.94 and 11,875.47 is: 16,387.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.96 : 29,580.94 = 11,875.47 : x
  2. Step 2: Convert to fraction form
    21,435.96/29,580.94 = 11,875.47/x
  3. Step 3: Cross multiply
    21,435.96x = 29,580.94 × 11,875.47
  4. Step 4: Simplify right side
    21,435.96x = 351,287,565.54
  5. Step 5: Solve for x
    x = 351,287,565.54/21,435.96
  6. Step 6: Final answer
    x = 16,387.77

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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.