Home / 11,988.56-16,537.80-7,792.40

Finding the Fourth Proportional to 11,988.56, 16,537.80 and 7,792.40

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Solution

The fourth proportional to 11,988.56, 16,537.80 and 7,792.40 is: 10,749.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.56 : 16,537.80 = 7,792.40 : x
  2. Step 2: Convert to fraction form
    11,988.56/16,537.80 = 7,792.40/x
  3. Step 3: Cross multiply
    11,988.56x = 16,537.80 × 7,792.40
  4. Step 4: Simplify right side
    11,988.56x = 128,869,152.72
  5. Step 5: Solve for x
    x = 128,869,152.72/11,988.56
  6. Step 6: Final answer
    x = 10,749.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.