Home / 20,612.04-30,915.64-9,215.34

Finding the Fourth Proportional to 20,612.04, 30,915.64 and 9,215.34

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Solution

The fourth proportional to 20,612.04, 30,915.64 and 9,215.34 is: 13,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.04 : 30,915.64 = 9,215.34 : x
  2. Step 2: Convert to fraction form
    20,612.04/30,915.64 = 9,215.34/x
  3. Step 3: Cross multiply
    20,612.04x = 30,915.64 × 9,215.34
  4. Step 4: Simplify right side
    20,612.04x = 284,898,133.92
  5. Step 5: Solve for x
    x = 284,898,133.92/20,612.04
  6. Step 6: Final answer
    x = 13,821.93

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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.