Home / 21,435.13-29,580.54-12,488.77

Finding the Fourth Proportional to 21,435.13, 29,580.54 and 12,488.77

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Solution

The fourth proportional to 21,435.13, 29,580.54 and 12,488.77 is: 17,234.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,435.13 : 29,580.54 = 12,488.77 : x
  2. Step 2: Convert to fraction form
    21,435.13/29,580.54 = 12,488.77/x
  3. Step 3: Cross multiply
    21,435.13x = 29,580.54 × 12,488.77
  4. Step 4: Simplify right side
    21,435.13x = 369,424,560.54
  5. Step 5: Solve for x
    x = 369,424,560.54/21,435.13
  6. Step 6: Final answer
    x = 17,234.54

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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.