Home / 28,512.70-39,347.28-16,415.55

Finding the Fourth Proportional to 28,512.70, 39,347.28 and 16,415.55

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Solution

The fourth proportional to 28,512.70, 39,347.28 and 16,415.55 is: 22,653.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.70 : 39,347.28 = 16,415.55 : x
  2. Step 2: Convert to fraction form
    28,512.70/39,347.28 = 16,415.55/x
  3. Step 3: Cross multiply
    28,512.70x = 39,347.28 × 16,415.55
  4. Step 4: Simplify right side
    28,512.70x = 645,907,242.20
  5. Step 5: Solve for x
    x = 645,907,242.20/28,512.70
  6. Step 6: Final answer
    x = 22,653.32

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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.