Home / 15,833.80-21,829.53-12,658.60

Finding the Fourth Proportional to 15,833.80, 21,829.53 and 12,658.60

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Solution

The fourth proportional to 15,833.80, 21,829.53 and 12,658.60 is: 17,451.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,833.80 : 21,829.53 = 12,658.60 : x
  2. Step 2: Convert to fraction form
    15,833.80/21,829.53 = 12,658.60/x
  3. Step 3: Cross multiply
    15,833.80x = 21,829.53 × 12,658.60
  4. Step 4: Simplify right side
    15,833.80x = 276,331,288.46
  5. Step 5: Solve for x
    x = 276,331,288.46/15,833.80
  6. Step 6: Final answer
    x = 17,451.99

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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.