Home / 20,838.88-31,258.33-9,152.20

Finding the Fourth Proportional to 20,838.88, 31,258.33 and 9,152.20

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Solution

The fourth proportional to 20,838.88, 31,258.33 and 9,152.20 is: 13,728.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.88 : 31,258.33 = 9,152.20 : x
  2. Step 2: Convert to fraction form
    20,838.88/31,258.33 = 9,152.20/x
  3. Step 3: Cross multiply
    20,838.88x = 31,258.33 × 9,152.20
  4. Step 4: Simplify right side
    20,838.88x = 286,082,487.83
  5. Step 5: Solve for x
    x = 286,082,487.83/20,838.88
  6. Step 6: Final answer
    x = 13,728.30

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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.