Home / 21,631.10-29,851.62-12,555.77

Finding the Fourth Proportional to 21,631.10, 29,851.62 and 12,555.77

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Solution

The fourth proportional to 21,631.10, 29,851.62 and 12,555.77 is: 17,327.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.10 : 29,851.62 = 12,555.77 : x
  2. Step 2: Convert to fraction form
    21,631.10/29,851.62 = 12,555.77/x
  3. Step 3: Cross multiply
    21,631.10x = 29,851.62 × 12,555.77
  4. Step 4: Simplify right side
    21,631.10x = 374,809,925.59
  5. Step 5: Solve for x
    x = 374,809,925.59/21,631.10
  6. Step 6: Final answer
    x = 17,327.37

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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.