Home / 21,124.86-29,152.62-11,693.76

Finding the Fourth Proportional to 21,124.86, 29,152.62 and 11,693.76

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Solution

The fourth proportional to 21,124.86, 29,152.62 and 11,693.76 is: 16,137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.86 : 29,152.62 = 11,693.76 : x
  2. Step 2: Convert to fraction form
    21,124.86/29,152.62 = 11,693.76/x
  3. Step 3: Cross multiply
    21,124.86x = 29,152.62 × 11,693.76
  4. Step 4: Simplify right side
    21,124.86x = 340,903,741.65
  5. Step 5: Solve for x
    x = 340,903,741.65/21,124.86
  6. Step 6: Final answer
    x = 16,137.56

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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.