Home / 28,566.86-39,422.38-15,819.77

Finding the Fourth Proportional to 28,566.86, 39,422.38 and 15,819.77

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Solution

The fourth proportional to 28,566.86, 39,422.38 and 15,819.77 is: 21,831.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,566.86 : 39,422.38 = 15,819.77 : x
  2. Step 2: Convert to fraction form
    28,566.86/39,422.38 = 15,819.77/x
  3. Step 3: Cross multiply
    28,566.86x = 39,422.38 × 15,819.77
  4. Step 4: Simplify right side
    28,566.86x = 623,653,035.92
  5. Step 5: Solve for x
    x = 623,653,035.92/28,566.86
  6. Step 6: Final answer
    x = 21,831.35

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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.