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Finding the Fourth Proportional to 21,365.29, 32,051.99 and 8,878.54

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Solution

The fourth proportional to 21,365.29, 32,051.99 and 8,878.54 is: 13,319.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,365.29 : 32,051.99 = 8,878.54 : x
  2. Step 2: Convert to fraction form
    21,365.29/32,051.99 = 8,878.54/x
  3. Step 3: Cross multiply
    21,365.29x = 32,051.99 × 8,878.54
  4. Step 4: Simplify right side
    21,365.29x = 284,574,670.64
  5. Step 5: Solve for x
    x = 284,574,670.64/21,365.29
  6. Step 6: Final answer
    x = 13,319.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.