Home / 28,364.94-39,143.30-15,617.86

Finding the Fourth Proportional to 28,364.94, 39,143.30 and 15,617.86

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Solution

The fourth proportional to 28,364.94, 39,143.30 and 15,617.86 is: 21,552.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,364.94 : 39,143.30 = 15,617.86 : x
  2. Step 2: Convert to fraction form
    28,364.94/39,143.30 = 15,617.86/x
  3. Step 3: Cross multiply
    28,364.94x = 39,143.30 × 15,617.86
  4. Step 4: Simplify right side
    28,364.94x = 611,334,422.91
  5. Step 5: Solve for x
    x = 611,334,422.91/28,364.94
  6. Step 6: Final answer
    x = 21,552.47

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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.