Home / 21,132.50-29,162.86-11,701.68

Finding the Fourth Proportional to 21,132.50, 29,162.86 and 11,701.68

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Solution

The fourth proportional to 21,132.50, 29,162.86 and 11,701.68 is: 16,148.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.50 : 29,162.86 = 11,701.68 : x
  2. Step 2: Convert to fraction form
    21,132.50/29,162.86 = 11,701.68/x
  3. Step 3: Cross multiply
    21,132.50x = 29,162.86 × 11,701.68
  4. Step 4: Simplify right side
    21,132.50x = 341,254,455.60
  5. Step 5: Solve for x
    x = 341,254,455.60/21,132.50
  6. Step 6: Final answer
    x = 16,148.32

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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.