Home / 10,946.48-16,391.37-7,972.70

Finding the Fourth Proportional to 10,946.48, 16,391.37 and 7,972.70

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Solution

The fourth proportional to 10,946.48, 16,391.37 and 7,972.70 is: 11,938.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,946.48 : 16,391.37 = 7,972.70 : x
  2. Step 2: Convert to fraction form
    10,946.48/16,391.37 = 7,972.70/x
  3. Step 3: Cross multiply
    10,946.48x = 16,391.37 × 7,972.70
  4. Step 4: Simplify right side
    10,946.48x = 130,683,475.60
  5. Step 5: Solve for x
    x = 130,683,475.60/10,946.48
  6. Step 6: Final answer
    x = 11,938.40

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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.