Home / 10,440.40-15,660.60-9,954.40

Finding the Fourth Proportional to 10,440.40, 15,660.60 and 9,954.40

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Solution

The fourth proportional to 10,440.40, 15,660.60 and 9,954.40 is: 14,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,440.40 : 15,660.60 = 9,954.40 : x
  2. Step 2: Convert to fraction form
    10,440.40/15,660.60 = 9,954.40/x
  3. Step 3: Cross multiply
    10,440.40x = 15,660.60 × 9,954.40
  4. Step 4: Simplify right side
    10,440.40x = 155,891,876.64
  5. Step 5: Solve for x
    x = 155,891,876.64/10,440.40
  6. Step 6: Final answer
    x = 14,931.60

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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.