Home / 20,612.57-30,915.27-9,518.32

Finding the Fourth Proportional to 20,612.57, 30,915.27 and 9,518.32

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Solution

The fourth proportional to 20,612.57, 30,915.27 and 9,518.32 is: 14,275.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.57 : 30,915.27 = 9,518.32 : x
  2. Step 2: Convert to fraction form
    20,612.57/30,915.27 = 9,518.32/x
  3. Step 3: Cross multiply
    20,612.57x = 30,915.27 × 9,518.32
  4. Step 4: Simplify right side
    20,612.57x = 294,261,432.75
  5. Step 5: Solve for x
    x = 294,261,432.75/20,612.57
  6. Step 6: Final answer
    x = 14,275.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.