Home / 15,789.99-21,800.75-12,032.45

Finding the Fourth Proportional to 15,789.99, 21,800.75 and 12,032.45

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Solution

The fourth proportional to 15,789.99, 21,800.75 and 12,032.45 is: 16,612.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,789.99 : 21,800.75 = 12,032.45 : x
  2. Step 2: Convert to fraction form
    15,789.99/21,800.75 = 12,032.45/x
  3. Step 3: Cross multiply
    15,789.99x = 21,800.75 × 12,032.45
  4. Step 4: Simplify right side
    15,789.99x = 262,316,346.92
  5. Step 5: Solve for x
    x = 262,316,346.92/15,789.99
  6. Step 6: Final answer
    x = 16,612.83

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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.