Home / 14,639.20-21,958.80-9,390.40

Finding the Fourth Proportional to 14,639.20, 21,958.80 and 9,390.40

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Solution

The fourth proportional to 14,639.20, 21,958.80 and 9,390.40 is: 14,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,639.20 : 21,958.80 = 9,390.40 : x
  2. Step 2: Convert to fraction form
    14,639.20/21,958.80 = 9,390.40/x
  3. Step 3: Cross multiply
    14,639.20x = 21,958.80 × 9,390.40
  4. Step 4: Simplify right side
    14,639.20x = 206,201,915.52
  5. Step 5: Solve for x
    x = 206,201,915.52/14,639.20
  6. Step 6: Final answer
    x = 14,085.60

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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.